I started getting git upload errors when creating CLs in src yesterday and it is unclear how to debug it: 

eyaich@snowshoe:~/projects/chromium/src$ git cl upload
Using 50% similarity for rename/copy detection. Override with --similarity.
Running presubmit upload checks ...
Traceback (most recent call last):
  File "/usr/local/google/home/eyaich/depot_tools/git_cl.py", line 5403, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/local/google/home/eyaich/depot_tools/git_cl.py", line 5385, in main
    return dispatcher.execute(OptionParser(), argv)
  File "/usr/local/google/home/eyaich/depot_tools/subcommand.py", line 252, in execute
    return command(parser, args[1:])
  File "/usr/local/google/home/eyaich/depot_tools/git_cl.py", line 4210, in CMDupload
    return cl.CMDUpload(options, args, orig_args)
  File "/usr/local/google/home/eyaich/depot_tools/git_cl.py", line 1592, in CMDUpload
    change=change)
  File "/usr/local/google/home/eyaich/depot_tools/git_cl.py", line 1536, in RunHook
    gerrit_obj=self._codereview_impl.GetGerritObjForPresubmit())
  File "/usr/local/google/home/eyaich/depot_tools/presubmit_support.py", line 1403, in DoPresubmitChecks
    results += executer.ExecPresubmitScript(presubmit_script, filename)
  File "/usr/local/google/home/eyaich/depot_tools/presubmit_support.py", line 1313, in ExecPresubmitScript
    result = eval(function_name + '(*__args)', context)
  File "<string>", line 1, in <module>
  File "<string>", line 2270, in CheckChangeOnUpload
  File "<string>", line 2034, in _CommonChecks
AttributeError: 'module' object has no attribute 'CheckAuthorizedAuthor'
eyaich@snowshoe:~/projects/chromium/src$