2

Please teach in order to solve the problem.

cd /vagrant sudo php bin/magento setup:upgrade sudo php bin/magento setup:di:compile sudo php bin/magento setup:static-content:deploy sudo php bin/magento setup:static-content:deploy ja_JP sudo php bin/magento cache:flush; sudo php bin/magento cache:clean sudo php bin/magento indexer:reindex sudo find var generated vendor pub/static pub/media app/etc -type f -exec chmod g+w {} + sudo find var generated vendor pub/static pub/media app/etc -type d -exec chmod g+ws {} + sudo chown -R :www-data . sudo chmod u+x bin/magento

1 exception(s): Exception #0 (InvalidArgumentException): Unable to serialize value.

Exception #0 (InvalidArgumentException): Unable to serialize value. #0 /vagrant/vendor/magento/framework/App/PageCache/Kernel.php(153):

Magento\Framework\Serialize\Serializer\Json->serialize(Array) #1 /vagrant/vendor/magento/module-page-cache/Model/Controller/Result/BuiltinPlugin.php(96): Magento\Framework\App\PageCache\Kernel->process(Object(Magento\Framework\App\Response\Http\Interceptor)) #2 /vagrant/vendor/magento/framework/Interception/Interceptor.php(146): Magento\PageCache\Model\Controller\Result\BuiltinPlugin->afterRenderResult(Object(Magento\Framework\View\Result\Page\Interceptor), Object(Magento\Framework\View\Result\Page\Interceptor), Object(Magento\Framework\App\Response\Http\Interceptor)) #3 /vagrant/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\View\Result\Page\Interceptor->Magento\Framework\Interception{closure}(Object(Magento\Framework\App\Response\Http\Interceptor)) #4 /vagrant/generated/code/Magento/Framework/View/Result/Page/Interceptor.php(26): Magento\Framework\View\Result\Page\Interceptor->___callPlugins('renderResult', Array, Array) #5 /vagrant/vendor/magento/framework/App/Http.php(139): Magento\Framework\View\Result\Page\Interceptor->renderResult(Object(Magento\Framework\App\Response\Http\Interceptor)) #6 /vagrant/vendor/magento/framework/App/Bootstrap.php(257): Magento\Framework\App\Http->launch() #7 /vagrant/pub/index.php(37): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #8 {main}

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5
  • post code that is getting the error Commented Mar 5, 2019 at 8:27
  • have you cleared the caches? Commented Mar 5, 2019 at 8:28
  • Yes, I deleted the cache. Commented Mar 5, 2019 at 8:31
  • Please follow @Ronak Rathod's answer. It will solve your problem. Commented Mar 5, 2019 at 8:35
  • I followed Ronak Rathod's answer, but the problem is not solved. We still need help. Commented Mar 5, 2019 at 8:53

3 Answers 3

Reset to default
2

The problem is in /vendor/magento/framework/Serialize/Serializer/Json.php there is a function unserialize($string)

There is a workaround - you can check if string is serialized and then use serialize($string). Change unserialize to:

public function unserialize($string) { /* Workaround: serialize first if is serialized */ if($this->is_serialized($string)) { $string = $this->serialize($string); } $result = json_decode($string, true); if (json_last_error() !== JSON_ERROR_NONE) { throw new \InvalidArgumentException('Unable to unserialize value.'); } return $result; }

and add function to check if string is serialized:

function is_serialized($value, &$result = null) { // Bit of a give away this one if (!is_string($value)) { return false; } // Serialized false, return true. unserialize() returns false on an // invalid string or it could return false if the string is serialized // false, eliminate that possibility. if ($value === 'b:0;') { $result = false; return true; } $length = strlen($value); $end = ''; switch ($value[0]) { case 's': if ($value[$length - 2] !== '"') { return false; } case 'b': case 'i': case 'd': // This looks odd but it is quicker than isset()ing $end .= ';'; case 'a': case 'O': $end .= '}'; if ($value[1] !== ':') { return false; } switch ($value[2]) { case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: break; default: return false; } case 'N': $end .= ';'; if ($value[$length - 1] !== $end[0]) { return false; } break; default: return false; } if (($result = @unserialize($value)) === false) { $result = null; return false; } return true; }
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  • error is throwed in serialize() function, not unserialize(), so your code has no effect Commented Mar 30, 2020 at 6:28
2

Please remove var cache as sudo rm -rf var/cache var/page_cache. It works for me.

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1

Please add more description when submiting a Question , when this error showed up and for what reason ?

Possible solutions:

  • Clear redis cache :

    redis-cli flushall

  • Permissions issue , need to set the umask :

Follow this link

Check this link for more info link

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11
  • Could you tell me the command by example? Commented Mar 5, 2019 at 9:01
  • What command do you want to know? Commented Mar 5, 2019 at 9:03
  • Move to the root directory and run "echo 077 > magento_umask"? Commented Mar 5, 2019 at 9:05
  • Better run this command : " echo 022 > magento_umask " Commented Mar 5, 2019 at 9:19
  • I confirmed that "echo 022> magento_umask" file was created and the setting was written. I logged in to the administrator screen and confirmed the front end, but the problem was not solved. Commented Mar 5, 2019 at 9:22

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