Please don't reply to unrelated threads when reporting a new issue. It's not just the subject being wrong (Django has nothing to do with delivery, this is a problem with viewing archives, I believe). Continuing a thread with an unrelated issue creates an apparent context which is at best temporarily confusing, and could interfere with solving the problem in worst case.
Ibiam Chihurumnaya via Mailman-users writes:
ERROR 2026-02-12 14:15:11,250 1985547 django.request Internal Server Error: /archives/list/soas@lists.sugarlabs.org/thread/CVAUPR7L6AYTNZXIWHQ263A6ZJUROTRC/
This is in HyperKitty, viewing a thread or a thread index.
233904 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/list_parser.py", line 178, in _parse_list_item 233905 block.parse(child, rules) 233906 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/block_parser.py", line 458, in parse 233907 end_pos2 = self.parse_method(m, state) 233908 File "/opt/mailman/venv/lib/python3.10/site-packages/mistune/core.py", line 214, in parse_method 233909 assert lastgroup 233910 AssertionError
I'm pretty sure this is a known bug in mistune. It's pretty much identical to the head of the thread ending the message below. (I don't think there's anything interesting in the followups to the thread, it's a different problem.)
See https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message/...
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