[MM3-users] Re: Adding Mass Subscribe custom template error

On 1/28/25 12:31, Arte Chambers via Mailman-users wrote:

I'm getting the following error when using mass subscription on a testing list with a custom template loaded for [list:user:notice:welcome]

HTTP Error 400: HTTPConnectionPool(host='localhost', port=8000): Read timed
out. (read timeout=5)

It appears you are setting the template in Postorius and there is an issue with your setting for POSTORIUS_TEMPLATE_BASE_URL. It looks like this is something like

POSTORIUS_TEMPLATE_BASE_URL = 'http://localhost:8000/'

and that connection is timing out. Try setting just the scheme and host for access to Postorius. I.e., if you access Postorius at a URL like https://www.example.com/mailman3/, try

POSTORIUS_TEMPLATE_BASE_URL = 'https://www.example.com/'

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