user registration doesn't work on remote server, VPS

I am deploying my first Laravel project to a VPS. Everything is working fine, I can login as admin, upload images and text to my database BUT I can't register users. The user registration, login, tables etc. are made with 'make:auth', the only thing I have done is added a couple of fields to the user.

The register controller validates all the information but doesn't save it to the database.

It is not giving me any errors in 'storage/logs/laravel.log'.

The registration is working fine locally.

Thanks.

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