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

On 6/23/26 4:02 PM, Mark Sapiro wrote:

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.

It looks like I am using Python 3.13.5 . Nevertheless I ran into the issue Steve pointed to.

Flo