Error when supplying keywords with --advisory-keywords

[copernico]

When running this: python client/cli/main.py CVE-2020-11997 --use-nvd --repository https://github.com/apache/guacamole-client --report html --version-interval 1.2.0:1.3.0 --use-backend optional --advisory-keywords=access,history,connection,user,visibility,addresses,permission

I get this:

  [ERROR]
Traceback (most recent call last):
  File "/Users/I064196/devel/project-kb/prospector/client/cli/main.py", line 343, in <module>
    main(sys.argv)
  File "/Users/I064196/devel/project-kb/prospector/client/cli/main.py", line 286, in main
    results, advisory_record = prospector(
  File "/Users/I064196/devel/project-kb/prospector/stats/execution.py", line 45, in _wrapper
    result = function(*args, **kwargs)
  File "/Users/I064196/devel/project-kb/prospector/stats/execution.py", line 73, in __exit__
    raise exc_val
  File "/Users/I064196/devel/project-kb/prospector/stats/execution.py", line 45, in _wrapper
    result = function(*args, **kwargs)
  File "/Users/I064196/devel/project-kb/prospector/client/cli/prospector_client.py", line 67, in prospector
    advisory_record = build_advisory_record(
  File "/Users/I064196/devel/project-kb/prospector/client/cli/console.py", line 31, in __exit__
    raise exc_val
  File "/Users/I064196/devel/project-kb/prospector/client/cli/prospector_client.py", line 67, in prospector
    advisory_record = build_advisory_record(
  File "/Users/I064196/devel/project-kb/prospector/datamodel/advisory.py", line 233, in build_advisory_record
    advisory_record.keywords += tuple(advisory_keywords)
TypeError: unsupported operand type(s) for +=: 'set' and 'tuple'