Ultimate SEO and phpBB Gallery - how to set up?

[Photostalker]

I installed Ultimate phpBB SEO Friendly URL and phpBB Gallery. But the gallery does not open. When I go to the link to the gallery - the main page of the forum opens. This is probably due to the incompatibility of these mods.

How do I fix this?

phpBB 3.3.11
PHP 7.4
Theme: Prosilver

[meis2m]

pls asked from gallery developer

[Photostalker]

Apparently the problem is not with phpBB Gallery as this extension works fine if usu is disabled. What could contribute to the solution of this issue?

[zetrader]

@Photostalker Did you put "Activate the Zero duplicate" to yes? If so, put it on no, the "zero duplicate" mode can cause more problems.

[Photostalker]

@zetrader Zero duplicate was already disabled before Gallery was installed.