I'm trying to install ruby on rails following this guide: https://gorails.com/setup/osx/10.12-sierra
It works correct, but at the end when I try the command "rails server", the following error shows up and I can't run my application.
/Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_CERT_REVOKED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_INVALID_CA /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_PATH_LENGTH_EXCEEDED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_INVALID_PURPOSE /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_CERT_UNTRUSTED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_CERT_REJECTED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_SUBJECT_ISSUER_MISMATCH /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_AKID_SKID_MISMATCH /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_AKID_ISSUER_SERIAL_MISMATCH /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_KEYUSAGE_NO_CERTSIGN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_ERR_APPLICATION_VERIFICATION /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_CRL_CHECK /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_CRL_CHECK_ALL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_IGNORE_CRITICAL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_X509_STRICT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_ALLOW_PROXY_CERTS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_POLICY_CHECK /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_EXPLICIT_POLICY /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_INHIBIT_ANY /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_INHIBIT_MAP /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_NOTIFY_POLICY /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_EXTENDED_CRL_SUPPORT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_USE_DELTAS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_CHECK_SS_SIGNATURE /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_TRUSTED_FIRST /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::V_FLAG_NO_ALT_CHAINS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SSL_CLIENT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SSL_SERVER /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_NS_SSL_SERVER /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SMIME_SIGN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_SMIME_ENCRYPT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_CRL_SIGN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_ANY /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_OCSP_HELPER /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::PURPOSE_TIMESTAMP_SIGN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_COMPAT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_SSL_CLIENT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_SSL_SERVER /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_EMAIL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_OBJECT_SIGN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_OCSP_SIGN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_OCSP_REQUEST /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::TRUST_TSA /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_AREA /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_DIR /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_FILE /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_DIR_ENV /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_CERT_FILE_ENV /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::X509::DEFAULT_PRIVATE_DIR /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_INTERNALERROR /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_MALFORMEDREQUEST /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_NOSTATUS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_SIGREQUIRED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_SUCCESSFUL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_TRYLATER /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_AFFILIATIONCHANGED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_CACOMPROMISE /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_CERTIFICATEHOLD /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_CESSATIONOFOPERATION /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_KEYCOMPROMISE /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_REMOVEFROMCRL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_SUPERSEDED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPONSE_STATUS_UNAUTHORIZED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::REVOKED_STATUS_UNSPECIFIED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOCERTS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOINTERN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOSIGS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOCHAIN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOVERIFY /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOEXPLICIT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOCASIGN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NODELEGATED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOCHECKS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::TRUSTOTHER /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::RESPID_KEY /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::NOTIME /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::V_CERTSTATUS_GOOD /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::V_CERTSTATUS_REVOKED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::V_CERTSTATUS_UNKNOWN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::V_RESPID_NAME /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::OCSP::V_RESPID_KEY /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_RSA /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_DSA /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_DH /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_RAND /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_CIPHERS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_DIGESTS /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_ALL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::Engine::METHOD_NONE /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::UNIVERSAL_TAG_NAME /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::EOC /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::BOOLEAN /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::INTEGER /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::BIT_STRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::OCTET_STRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::NULL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::OBJECT /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::OBJECT_DESCRIPTOR /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::EXTERNAL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::REAL /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::ENUMERATED /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::EMBEDDED_PDV /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::UTF8STRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::RELATIVE_OID /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::SEQUENCE /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::SET /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::NUMERICSTRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::PRINTABLESTRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::T61STRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::VIDEOTEXSTRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::IA5STRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::UTCTIME /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::GENERALIZEDTIME /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::GRAPHICSTRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::ISO64STRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::GENERALSTRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::UNIVERSALSTRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::CHARACTER_STRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/x86_64-darwin16/openssl.bundle: warning: already initialized constant OpenSSL::ASN1::BMPSTRING /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/pkey.rb:8: warning: already initialized constant OpenSSL::PKey::DH::DEFAULT_1024 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/pkey.rb:8: warning: previous definition of DEFAULT_1024 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/pkey.rb:17: warning: already initialized constant OpenSSL::PKey::DH::DEFAULT_2048 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/pkey.rb:17: warning: previous definition of DEFAULT_2048 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/pkey.rb:30: warning: already initialized constant OpenSSL::PKey::DEFAULT_TMP_DH_CALLBACK /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/pkey.rb:30: warning: previous definition of DEFAULT_TMP_DH_CALLBACK was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::AES /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of AES was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::CAST5 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of CAST5 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::BF /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of BF was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::DES /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of DES was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::IDEA /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of IDEA was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::RC2 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of RC2 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::RC4 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of RC4 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:18: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:24: warning: already initialized constant OpenSSL::Cipher::RC5 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:24: warning: previous definition of RC5 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:28: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:33: warning: already initialized constant OpenSSL::Cipher::AES128 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:33: warning: previous definition of AES128 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:28: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:33: warning: already initialized constant OpenSSL::Cipher::AES192 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:33: warning: previous definition of AES192 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:28: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:33: warning: already initialized constant OpenSSL::Cipher::AES256 /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/openssl-2.0.3/lib/openssl/cipher.rb:33: warning: previous definition of AES256 was here /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:64: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:64: warning: constant OpenSSL::Cipher::Cipher is deprecated /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:64:in `<class:Cipher>': superclass mismatch for class Cipher (TypeError) from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:16:in `<module:OpenSSL>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl/cipher.rb:15:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl.rb:17:in `require' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/openssl.rb:17:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/key_generator.rb:2:in `require' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/activesupport-5.0.1/lib/active_support/key_generator.rb:2:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/application.rb:4:in `require' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/application.rb:4:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails.rb:11:in `require' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails.rb:11:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/commands/server.rb:4:in `require' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/commands/server.rb:4:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:138:in `require' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:138:in `require_command!' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:83:in `server' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/railties-5.0.1/lib/rails/commands.rb:18:in `<top (required)>' from /Users/lechucico/Documents/myapp/bin/rails:9:in `require' from /Users/lechucico/Documents/myapp/bin/rails:9:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/spring-2.0.1/lib/spring/client/rails.rb:28:in `load' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/spring-2.0.1/lib/spring/client/rails.rb:28:in `call' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/spring-2.0.1/lib/spring/client/command.rb:7:in `call' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/spring-2.0.1/lib/spring/client.rb:30:in `run' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/spring-2.0.1/bin/spring:49:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/spring-2.0.1/lib/spring/binstub.rb:31:in `load' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/spring-2.0.1/lib/spring/binstub.rb:31:in `<top (required)>' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require' from /Users/lechucico/.rbenv/versions/2.4.0/lib/ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require' from /Users/lechucico/Documents/myapp/bin/spring:15:in `<top (required)>' from bin/rails:3:in `load' from bin/rails:3:in `<main>' What I could do?
Thanks.
Cipherin your code (or gems) twice. Do you have any custom code or custom gems that the guide didn't tell you to include? Try runningbundle installorbundle update.