Adds checks if the amqp channel has an error

src/db/AMQPConnector.ts

@@ -32,6 +32,9 @@ class AMQPConnector {
       vhost: settings.amqp.vhost,
     });
     this._channel = await this._connection.createChannel();
+    this._channel.on('error', error => {
+      console.error('Exception in amqp channel occured', error);
+    });
   }
 }
 

src/entities/quiz/QuizEntity.ts

@@ -212,10 +212,7 @@ export class QuizEntity extends AbstractEntity implements IQuizEntity {
       status: StatusProtocol.Success,
       step: MessageProtocol.Closed,
     })));
-    try {
-      AMQPConnector.channel.checkExchange(this._exchangeName).then(() => AMQPConnector.channel.deleteExchange(this._exchangeName));
-    } catch {
-    }
+    AMQPConnector.channel.deleteExchange(this._exchangeName);
   }
 
   public reset(): void {