Blank Settings page

I have a problem with the newest update of your plugin. On all of my websites the Settings page is totally blank. After clicking on the Settings menu on the left (FluentCRM/Settings), only a black line flashes once on the top and the page doesn’t load anything and remains empty. I tried on different websites with cleared cache, 256MB Memory limit, in incognito window, with different themes, all plugins deactivated, PHP versions raised to 8.3 (8.4 and 8.5 crashes the plugin) but without success.

Please help what could be the reason that the Settings page is not working anymore.