Error running on line a project

URL of experiment:

Description of the problem:
when I try to run my project on line, I enconter an error, that is:

Traceback (most recent call last):
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\builder\”, line 1341, in onPavloviaRun
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\pavlovia_ui\”, line 508, in syncProject
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\pavlovia_ui\”, line 119, in showCommitDialog
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\projects\”, line 967, in commit
self.repo.git.commit(’-m’, message)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\”, line 548, in
return lambda *args, **kwargs: self._call_process(name, *args, **kwargs)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\”, line 1014, in _call_process
return self.execute(call, **exec_kwargs)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\”, line 825, in execute
raise GitCommandError(command, status, stderr_value, stdout_value)
git.exc.GitCommandError: Cmd(‘C:\Program Files\PsychoPy3\MinGit\cmd\git.exe’) failed due to: exit code(128)
cmdline: C:\Program Files\PsychoPy3\MinGit\cmd\git.exe commit -m _
stderr: 'fatal: Unable to create ‘C:/Users/Utente/noah Dropbox/NOAH/tirocini/LUCA/progetto/stop-signal-task-master-FUMO/.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.’

Someone can explain me what does it mean?
Thank you

Are you trying to create a second experiment in the same folder?


You find an explanation here. Basically, there was either a second git-process running when you tried to sync or a previous git-process did not finish properly. The advice is to delete the index.lock file.

Best wishes Jens


I think this was the problem. Acidentally I created two same named projects.
Thank you very much