My experiment isn't syncing

I am using version 2020.2.3. I have been trying to upload the experiment to pavlovia for the first time. I get the following error:

Traceback (most recent call last):
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\pavlovia_ui\menu.py”, line 129, in onNew
retVal = syncProject(parent=self.parent, project=projEditor.project)
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\pavlovia_ui\project.py”, line 508, in syncProject
infoStream=syncFrame)
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\pavlovia_ui\functions.py”, line 96, in showCommitDialog
changeDict, changeList = project.getChanges()
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\projects\pavlovia.py”, line 901, in getChanges
for this in self.repo.index.diff(None):
File “C:\Program Files\PsychoPy3\lib\site-packages\git\index\util.py”, line 76, in check_default_index
return func(self, *args, **kwargs)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\index\base.py”, line 1239, in diff
return super(IndexFile, self).diff(other, paths, create_patch, **kwargs)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\diff.py”, line 152, in diff
index = diff_method(self.repo, proc)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\diff.py”, line 515, in _index_from_raw_format
handle_process_output(proc, handle_diff_line, None, finalize_process, decode_streams=False)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\cmd.py”, line 120, in handle_process_output
return finalizer(process)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\util.py”, line 333, in finalize_process
proc.wait(**kwargs)
File “C:\Program Files\PsychoPy3\lib\site-packages\git\cmd.py”, line 415, in wait
raise GitCommandError(self.args, status, errstr)
git.exc.GitCommandError: Cmd(‘C:\Program Files\PsychoPy3\MinGit\cmd\git.exe’) failed due to: exit code(3221225478)
cmdline: C:\Program Files\PsychoPy3\MinGit\cmd\git.exe diff --abbrev=40 --full-index -M --raw --no-color

Any solutions welcome.
Thanks in Advance.