Build fails when contributor list for file can't be fetched

[jonaharagon]

mkdocs build fails when this plugin can't access the contributors list for a file from GitHub's API. In this case it's because the file in question is from a submodule, so the file is not contained within the actual repo, but I would imagine this would also occur when adding any new file to the site which hasn't been uploaded to GitHub yet.

ERROR    -  HTTP error occurred: 404 Client Error: Not Found for url: https://github.com/privacyguides/privacyguides.org/contributors-list/main/docs/assets/brand/README.md
ERROR    -  Error building page 'assets/brand/README.md': local variable 'authors' referenced before assignment
Traceback (most recent call last):
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/bin/mkdocs", line 8, in <module>
    sys.exit(cli())
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/mkdocs/__main__.py", line 192, in build_command
    build.build(config.load_config(**kwargs), dirty=not clean)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/mkdocs/commands/build.py", line 314, in build
    _build_page(file.page, config, doc_files, nav, env, dirty)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/mkdocs/commands/build.py", line 212, in _build_page
    context = config['plugins'].run_event(
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/mkdocs/plugins.py", line 102, in run_event
    result = method(item, **kwargs)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/mkdocs_git_committers_plugin_2/plugin.py", line 98, in on_page_context
    authors, last_commit_date = self.list_contributors(git_path)
  File "/home/runner/.local/share/virtualenvs/privacyguides.org-YpGxi_ti/lib/python3.10/site-packages/mkdocs_git_committers_plugin_2/plugin.py", line 90, in list_contributors
    return authors, last_commit_date
UnboundLocalError: local variable 'authors' referenced before assignment

[jonaharagon]

Can confirm this happens when adding any new file to the docs actually, despite the plugin recognizing the file has no git logs in this case:

INFO     -  Building documentation...
INFO     -  git-committers plugin ENABLED
INFO     -  Cleaning site directory
WARNING  -  [git-revision-date-localized-plugin] '/Users/jonah/GitHub/privacyguides.org/docs/new-page.md' has no git logs, using current timestamp
[. . .]
INFO     -  Fetching contributors for docs/new-page.md
ERROR    -  HTTP error occurred: 404 Client Error: Not Found for url: https://github.com/privacyguides/privacyguides.org/contributors-list/main/docs/new-page.md
ERROR    -  Error building page 'new-page.md': local variable 'authors' referenced before assignment
[. . .]

[ojacques]

Thanks for the report @jonaharagon. Fixed in 1.0.2. I am not sure how submodules could be handled. So, I listed this as a limitation for now.