Looks like you have an open git commit
or git merge
going on, and an editor is still open editing the commit message.
Two choices:
.swp
file (if you're sure the other git session has gone away).Clarification from comments:
.swp
is being used by entering the command :sw
within the editing session, but generally it's a hidden file in the same directory as the file you are using, with a .swp
file suffix (i.e. ~/myfile.txt
would be ~/.myfile.txt.swp
).