Hello/Hi/Greetings,

I upgraded Piwigo a few days ago and at the same time did maintenance to purge the cache. Since then none of the custom image sizes, including the original size, is available and I get NOT FOUND message, with the following: The requested URL was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Prior to this upgrade all the custom image size links worked. I've tried to find an existing forum message about this but I'm lost. The entire gallery is private with family photos.

Can anyone help me with this?

Environment
Piwigo 13.3.0 Check for upgrade
Installed on 23 October 2019, 3 years 1 month 2 weeks 6 days ago
Operating system: Linux
PHP: 7.4.30 (Show info) [2022-12-13 10:12:44]
MySQL: 8.0.28-0ubuntu0.20.04.3 [2022-12-13 10:12:44]
Graphics Library: ImageMagick 6.9.7-4
Cache size 1779.55 Mo   calculated 4 hours ago Refresh
Activated plugin list3
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Piwigo URL: https://denisepaquette.com/famgal/