php - TYPO3 9.5: class not found with NGINX

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Solution:

Neither Apache nor Nginx execute PHP. but they provide an environment.
Information about this Environment can be found with the php function phpinfo().
So get that output for both systems to see what differs.
Then you can try to unify the systems as you try to configure the Nginx like the Apache installation.

Keep in mind that TYPO3 has a list of classes for the autoloader either from Composer or manual.
If this is mixed up your classes can't be found well.