Am 06.06.2017 um 22:25 schrieb Abhilash Raj:

Excerpts from Simon Liebold via Mailman-users's message of June 6, 2017 1:20 pm:

...

AttributeError: type object 'BaseCommand' has no attribute

'option_list'

It was reported recently on the bug tracker, you can track the progress here1.

Thanks Abhilash for the pointer.

Simon