Hi @Mohammed Amer,
Welcome to Atlassian Community.
The error you get indicate that your local copy of the master branch is behind the remote master. In order to resolve that you first have to do a pull, and once that is done the push should work.
A vulnerability has been published today in regards to Sourcetree for Windows. The goal of this article is to give you a summary of information we have gathered from Atlassian Community as a st...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event