Fix a laravel database connection problem

I am trying to run the php artisan migrate in laravel and i am getting this error. it was working before, when i upgraded my mac os to High sierra seems something went wrong, probably with ini file, or some paths, etc.. no idea. Here is the error: Illuminate\Database\QueryException : SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) (SQL: select * from [login to view URL] where table_schema = laravel20.0 and table_name = migrations) at /Users/MediaEdgeAgency/Desktop/Projects/laravel20.0/vendor/laravel/framework/src/Illuminate/Database/[login to view URL]: 664 660| // If an exception occurs when attempting to run a query, we'll format the error 661| // message to include the bindings with SQL, which will make this exception a 662| // lot more helpful to the developer instead of just the database's errors. 663| catch (Exception $e) { > 664| throw new QueryException( 665| $query, $this->prepareBindings($bindings), $e 666| ); 667| } 668| Exception trace: 1 PDOException::("SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO)") /Users/MediaEdgeAgency/Desktop/Projects/laravel20.0/vendor/laravel/framework/src/Illuminate/Database/Connectors/[login to view URL] : 68 2 PDO::__construct("mysql:host=[login to view URL];port=3306;dbname=laravel20.0", "root", "", []) /Users/MediaEdgeAgency/Desktop/Projects/laravel20.0/vendor/laravel/framework/src/Illuminate/Database/Connectors/[login to view URL] : 68 Please use the argument -v to see more details.