I have configured a local bit repository and have several test commits with files in it.Status is available as follows.
I have a Bitbucket account and created a new repository and I have given the link of it. 
Then I tried to push the content of local git to remote repository in Bitbucket. But I get an error message. 
How to get this sorted? Thanks in advance for any help!!!

git pull -u origin masterfirst. then commit again and try pushgit pull origin masterfirst