How to overcome ReflectionException Class app\modules\module_name\module does not exist?

Question

Yii

Wrote a simple application. It works from under Windows + Apache + muscle. No complaints.
I decided to test everything on the hosting, uploaded all the files, changed the database, user and password to the right one, uploaded the database structure and some table data.
The hosting is nginx. I try to run it and get an error:
ReflectionException
Class app\modules\str\module does not exist
I don't even know what the problem could be. It still worked on a Windows server, but it didn't work on Linux. Please point out possible errors to those who know

Answer 1

I had the same problem.
In my case, the problem turned out to be in the module namespace
was: app\Modules\module_name
needed: app\modules\module_name
It is worth checking the module namespace, the correctness of the module in the config and the folder structure.