Laravel serve issue with php 8 version

I recently updated my php on my macbook to php version 8 by mistake laravel stopped working no command is working

php artisan serve composer dumpautoload

showing error below

PHP 8.0: ReflectionParameter::getClass()), ::isArray(), and ::isCallable() methods deprecated .

Level 10

Downgrade to php 7.4

Level 10

or swicth between versions

$ sphp 7.0 => PHP 7.0
$ sphp 7.3 => PHP 7.3
$ sphp 8.0 => PHP 8.0

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