Fatal error: Uncaught Error: Class "aksafan\fcm\source\requests\AbstractRequest" not found in /var/www/html/prod/vendor/aksafan/yii2-fcm-both-api/source/requests/LegacyApiRequest.php:21 Stack trace: #0 {main} thrown in /var/www/html/prod/vendor/aksafan/yii2-fcm-both-api/source/requests/LegacyApiRequest.php on line 21