php artisan migrateが上手く行かなかった時の対処法/SQLSTATE[HY000] [1045]

  Illuminate\Database\QueryException  : SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES) (SQL: select * from information_schema.tables where table_schema = laravel_chat and table_name = migrations and table_type = 'BASE TABLE')

  at /Users/username/Desktop/laravel_chat/vendor/laravel/framework/src/Illuminate/Database/Connection.php: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: YES)")
      /Users/username/Desktop/laravel_chat/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70

  2   PDO::__construct("mysql:host=127.0.0.1;port=3306;dbname=laravel_chat", "root", "root", [])
      /Users/username/Desktop/laravel_chat/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php:70

  Please use the argument -v to see more details.


SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES) (SQL: select * from information_schema.tables where table_schema = laravel_chat and table_name = migrations and table_type = 'BASE TABLE')

'mysql' = [
            'driver' = 'mysql',
            'url' = env('DATABASE_URL'),
            'host' = env('DB_HOST', '127.0.0.1'),
            'port' = env('DB_PORT', '3306'),
            'database' = env('DB_DATABASE', 'XXX'),
            'username' = env('DB_USERNAME', 'XXX'),
            'password' = env('DB_PASSWORD', 'XXX'),

 DB_CONNECTION=mysql
 DB_HOST=127.0.0.1
 DB_PORT=3306
 DB_DATABASE=xxx
 DB_USERNAME=xxx
 DB_PASSWORD=xxx

mysql -u root(ユーザー名)　-p;

show databases;

CREATE DATASBASE `データベース名`;