i have problem to run laravel 5 project on local

i cloned a Laravel 5 project and try to run it . i got some errors in composer install composer update php artisan migrate

(actually all of "php aritsan" commands)

i got this error :

In Connector.php line 70:

  SQLSTATE[HY000] [2006] MySQL server has gone away  


In Connector.php line 70:

  PDO::__construct(): Error while reading greeting packet. PID=21464

this is my .env

  APP_NAME="Mode"
  APP_TITLE="Mode"
  APP_ENV="live"
  APP_KEY=base64:W8Uq******************
  APP_DEBUG="true"
  APP_LOG_LEVEL=debug
  APP_URL=http://localhost:82
  APP_LOCALE=fa
  APP_TIMEZONE="Asia/Tehran"

  ADMINISTRATOR_USERNAMES="admin"
  ALLOW_REGISTRATION=true

  LOG_CHANNEL=stack

  DB_CONNECTION=mysql
  DB_HOST="localhost:82"
  DB_PORT="3306"
  DB_DATABASE="mode"
  DB_USERNAME="root"
  DB_PASSWORD=""

  BROADCAST_DRIVER=pusher
  CACHE_DRIVER=file
  SESSION_DRIVER=file
  QUEUE_CONNECTION=sync

  REDIS_HOST=127.0.0.1
  REDIS_PASSWORD=null
  REDIS_PORT=6379

i tried " php artisan clear " but i got same error .

i am trying to run this project on local . i use php 7.4 i use wamp.

via Chebli Mohamed