git error 已解决【Another git process seems to be running in this repository, e.g. an editor opened by】

fatal: Unable to create 'D:/javapub/JavaPub-Web/.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.