Notice: Trying to access array offset on value of type null in C:\xampp\htdocs\rabani-mobile-api\vendor\midtrans\midtrans-php\Midtrans\Notification.php on line 26

Fatal error: Uncaught Exception: The ServerKey/ClientKey is contains white-space. Please double-check your API key. Please double-check your ServerKey key. You can check from the Midtrans Dashboard. See https://docs.midtrans.com/en/midtrans-account/overview?id=retrieving-api-access-keys for the details or contact support at support@midtrans.com if you have any questions. in C:\xampp\htdocs\rabani-mobile-api\vendor\midtrans\midtrans-php\Midtrans\ApiRequestor.php:86 Stack trace: #0 C:\xampp\htdocs\rabani-mobile-api\vendor\midtrans\midtrans-php\Midtrans\ApiRequestor.php(25): Midtrans\ApiRequestor::remoteCall('https://api.san...', '<your serverkey...', false, 'GET') #1 C:\xampp\htdocs\rabani-mobile-api\vendor\midtrans\midtrans-php\Midtrans\Transaction.php(25): Midtrans\ApiRequestor::get('https://api.san...', '<your serverkey...', false) #2 C:\xampp\htdocs\rabani-mobile-api\vendor\midtrans\midtrans-php\Midtrans\Notification.php(26): Midtrans\Transaction::status(NULL) #3 C:\xampp\htdocs\rabani-mobile-api\vendor\midtrans\midtran in C:\xampp\htdocs\rabani-mobile-api\vendor\midtrans\midtrans-php\Midtrans\ApiRequestor.php on line 86