[MM3-users] Re: Mass subscription: HTTP Error 400: 'pathlib._local.PosixPath' object does not support the context manager protocol

On June 23, 2026 2:11:59 AM PDT, Flo via Mailman-users <mailman-users@mailman3.org> wrote:

Hi,

Debian trixie, virtualenv installation: When I entered addresses at the mass subscription field I got:

HTTP Error 400: 'pathlib._local.PosixPath' object does not support the context manager protocol

Current Mailman does not support python 3.14.

-- Mark Sapiro <mark@msapiro.net> Sent from my Not_an_iThing with standards compliant, open source software.