ERROR : SQLSTATE[HY000] [2002] No such file or directory

I don't know why I'm getting this error :

"SQLSTATE[HY000] [2002] No such file or directory (SQL: insert into users (name, email, username, password, phone, updated_at, created_at) values (Ahmed Mohsen, Ahmed Mohsen, 27mdmo7sn, hmd7777777, 1155727380, 2018-04-17 00:11:53, 2018-04-17 00:11:53))"

when running this code

$user = new User();
        $user->name = $request->name;
        $user->email = $request->name;
        $user->username = $request->username;
        $user->password = $request->password;
        $user->phone = $request->phone;
        $user->save();

my DB connection details

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3333
DB_DATABASE=bglee
DB_USERNAME=root
DB_PASSWORD=

via Chebli Mohamed