RabbitMQ: 3.8.2 Using `rpc/simple/rx-rpc-server.html`, RabbitMQ logs errors : ``` 2020-04-08 02:17:58.752 [error] <0.2848.2> Channel error on connection <0.2839.2> (172.19.0.1:36448 -> 172.19.0.2:15674, vhost: '/', user: 'guest'), channel 1: operation basic.consume caused a channel exception not_found: no queue 'integer-addition' in vhost '/' 2020-04-08 02:17:58.752 [error] <0.2835.2> STOMP error frame sent: Message: not_found Detail: "NOT_FOUND - no queue 'integer-addition' in vhost '/'\n" Server private detail: none ``` the connect is succeed shown in chrome console log . please help.