Failed Test Cases after enabling fulfillment

[Piush-hexaware]

I have started using action-on-google-testing package for our enterprise bot. During testing, I found some issue regarding failed scenarios -:
1.sometime intent doesn't match with my utterance.
2. When I enable fulfillment for webhook, I not getting any response but when I disable the fulfillment and added static response that time it was working fine.

error:
2 exceptions

Uncaught Exception
TypeError: Cannot read property 'url' of undefined
ClientDuplexStream.conversation.on (node_modules/actions-on-google-testing/src/actions-on-google.ts:559:62)
Object.onReceiveMessage (node_modules/grpc/src/client_interceptors.js:1292:19)
InterceptingListener.recvMessageWithContext (node_modules/grpc/src/client_interceptors.js:607:19)

[Fleker]

Do these things work if you were to test using the simulator, or a physical device?

[Piush-hexaware]

Yes Fleker !
We tested so many times manually from physical devices as well as simulator.It was giving the correct response.