Why doesn't composer autoload work after transferring the site to hosting?

Question

PHP

Good day!
Tell me what could be the problem. Autoload is registered in the composer:

"autoload": {
        "psr-0": {
            "models\\": "app/",
            "views\\": "app/",
            "controllers\\": "app/"
        }
    }

And, accordingly, in the future I do this:
new controllers\Routes();

On openserver it works fine, but on the host Class 'controllers\Routes' not found.
At the same time, all libraries work fine

. What could be the trouble?

Answer 1

It seems to me that the problem is in the case sensitivity of Linux and the case insensitivity of Windows - there they rolled namespaces with a small letter, but on hosting - no

Answer 2

Maybe don't install composer on hosting? Ask the hoster for info!

Answer 3

did you move the vendor folder? if yes, then it is better to delete and form the vendor on a new one