title: Fast-forward merge is not possible. To merge this request, first rebase locally
body: <p>Recently, I have created newbranch and created a merge request to Master branch. Before TeamLead accept merge request into Master branch another team member was committed another fix to the same branch(newbranch). After that I committed my local changes and pulled the changes in newbranch to local branch. And I pushed my local commit to newbranch</p>
  
  <p><a href="https://i.stack.imgur.com/5ONuQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/5ONuQ.png" alt="gitlab error"></a></p>
  
  <p>My TeamLead told me to rebase my branch to an earlier version.
  And resolve conflicts.
  I don't know what to do now. Any idea?</p>