Unable to transfer project from openserver (win) to hosting. (v3.0.60)

I’m trying to upload a project to hosting, I get an error 500
require_once(/var/www/username/data/www/site.ru/modules\system\ServiceProvider.php): Failed to open stream: No such file or directory
It looks like the problem is in the backslash in the path.
Locally on win under openserver everything works.
Where to dig?

Try clearing the temporary PHP files found in storage/framework and storage/cms.

Yes, it works. Thank you.