GIT提交代码出错File exists.

今天合并代码的时候执行了 git status   出现了下面的执行命令
no changes added to commit (use "git add" and/or "git commit -a")
执行了  git add 

就报下面的错误了


fatal: Unable to create ‘D:/3.0项目和资料/3.0项目/fanuc-部署项目/frame-static/.git/index.lock‘: File exists.
Another git process seems to be running in this repository, e.g.
an editor opened by ‘git commit‘. Please make sure all processes
are terminated then try again. If it still fails, a git process
may have crashed in this repository earlier:
remove the file manually to continue.

 rm -f ./.Git/index.lock