Fatal error: Uncaught Error: Interface 'yii\base\BootstrapInterface' not found in /var/www/html/ng-crm/yiiapp/vendor/devgroup/yii2-http2-server-push/src/AutomaticServerPush.php:15 Stack trace: #0 {main} thrown in /var/www/html/ng-crm/yiiapp/vendor/devgroup/yii2-http2-server-push/src/AutomaticServerPush.php on line 15