In production, symlink or copy the correct file to .env .
: This means your APP_KEY is empty. Run php artisan key:generate to fix it. .env.laravel
Your local development setup is different from your production server. The .env file allows you to have a DB_DATABASE=local_db on your machine and DB_DATABASE=prod_db on the server without changing a single line of code. In production, symlink or copy the correct file to