สอบถาม Error SQLSTATE[HY000] [2013] Lost connection to MySQL server at eading initial communication packet, system error: 0

APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:he2BNuuRVr7IZsREbYgiuJPKSQurhVdJuRRXSdvP40w=
APP_DEBUG=true
APP_LOG_LEVEL=debug
APP_URL=http://www.homeaflow.com/

DB_CONNECTION=mysql
DB_HOST=***.**.**.***
DB_PORT=***
DB_DATABASE=homeaflo_homeaflow
DB_USERNAME=******
DB_PASSWORD=******

'connections' => [

        'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', 'xxxxxx'),
            'port' => env('DB_PORT', 'xxxxx'),
            'database' => env('DB_DATABASE', 'homeaflo_homeaflow'),
            'username' => env('DB_USERNAME', 'xxxxxx'),
            'password' => env('DB_PASSWORD', 'xxxxxxx'),
            'unix_socket' => env('DB_SOCKET', ''),
            'charset' => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],


    ]