I was trying to upload to https://chromium-review.googlesource.com/c/437821/ while the change was abandoned, and I got this error message:

g cl upload --gerrit                                                                                                                                                                                                    
Using 50% similarity for rename/copy detection. Override with --similarity.
Running presubmit upload checks ...
Traceback (most recent call last):
  File "/usr/local/google/home/martiniss/dt/git_cl.py", line 5282, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/local/google/home/martiniss/dt/git_cl.py", line 5264, in main
    return dispatcher.execute(OptionParser(), argv)
  File "/usr/local/google/home/martiniss/dt/subcommand.py", line 252, in execute
    return command(parser, args[1:])
  File "/usr/local/google/home/martiniss/dt/git_cl.py", line 4266, in CMDupload
    return cl.CMDUpload(options, args, orig_args)
  File "/usr/local/google/home/martiniss/dt/git_cl.py", line 1529, in CMDUpload
    change=change)
  File "/usr/local/google/home/martiniss/dt/git_cl.py", line 1473, in RunHook
    gerrit_obj=self._codereview_impl.GetGerritObjForPresubmit())
  File "/usr/local/google/home/martiniss/dt/presubmit_support.py", line 1242, in DoPresubmitChecks
    results += executer.ExecPresubmitScript(presubmit_script, filename)
  File "/usr/local/google/home/martiniss/dt/presubmit_support.py", line 1152, in ExecPresubmitScript
    result = eval(function_name + '(*__args)', context)
  File "<string>", line 1, in <module>
  File "<string>", line 122, in CheckChangeOnUpload
  File "<string>", line 48, in CommonChecks
  File "/usr/local/google/home/martiniss/dt/presubmit_canned_checks.py", line 882, in CheckOwners
    approval_needed=input_api.is_committing)
  File "/usr/local/google/home/martiniss/dt/presubmit_canned_checks.py", line 918, in GetCodereviewOwnerAndReviewers
    return func(input_api, email_regexp, approval_needed)
  File "/usr/local/google/home/martiniss/dt/presubmit_canned_checks.py", line 981, in _GerritOwnerAndReviewers
    r for r in input_api.gerrit.GetChangeReviewers(issue, approval_needed)
  File "/usr/local/google/home/martiniss/dt/presubmit_support.py", line 249, in GetChangeReviewers
    cr = self.GetChangeInfo(issue)['labels']['Code-Review']
KeyError: 'Code-Review'