SQLSTATE[HY000] [1049] Unknown database

Did you set .env file for your database?

This is default, set them.

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=laravel
DB_USERNAME=root
DB_PASSWORD=

If so then run

php artisan config:clear

php artisan config:clear same error unknown database

but on a web browser, its perfectly work fine (localhost:8080/yoursite)

my .env file:-

DB_CONNECTION=mysql

DB_HOST=127.0.0.1

DB_PORT=3306

DB_DATABASE=yoursite

DB_USERNAME=root

DB_PASSWORD=

What name of database do you get after Unknown database?

yoursite but you must think about how works fine on the web browser that means database connection is fine but any command of laravel don't work like migration config: clear or any commands

And did you create that database?

Check if you have a file bootstrap\cache\config.php. If so remove it.

No, I don't have file config.php it only two files one is the packages.php, and the other is the services.php

Try to restart your server.

Still error But when i change db conmetion - 127.0.0.1 to 127.0.0.1:8080 On terminal, its showing different error that is mysql has gone away But on web browser, db connection is refused