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No, PHP artisan serve is for development. If Apache is the server there set it up correctly.

Also digital ocean has tutorials.

@preskhaled deploying to digital ocean is covered by this tutorial https://www.cloudways.com/blog/install-laravel-on-digitalocean/

@automica I know this article, it's irrelevant but thank you.

@jlrdw Thank you

The problem was in the permissions of the project directory :) I have to write sudo chown -R www-data.www-data /var/www/project.