Hi,
I upgraded my site to PHP 7.4 yesterday and now I get a PHPmailer uncaught error on line 1808 when a new user tries to register.

The registration seems to go thru, but the user gets an error dump! Any ideas on how to fix this?

BTW, when I tried to update Piwigo to 12.2 it flagged my site as needing to upgrade PHP from 5.x, that's why I upgraded to PHP 7.4, also my PHPBB forum needed it to upgrade to 3.3.5. The PHPBB forum upgraded OK, as did the Piwigo upgrade.

Environment

    Piwigo 12.2.0 Check for upgrade
    Operating system: Linux
    PHP: 7.4.10 (Show info) [2022-02-12 13:57:09]
    MySQL: 5.6.47-87.0-log [2022-02-12 13:57:09]
    Graphics Library: External ImageMagick 6.8.9-9
    Cache size N/A   never calculated

Piwigo URL: http://g741.org/piwigo