Cannot monitor device messages

[huco95]

I am trying to monitor the device messages but I get this errors:

[IoTHubMonitor] At least one receiver for the endpoint is created with epoch of '69', and so non-epoch receiver is not allowed. Either reconnect with a higher epoch, or make sure all epoch receivers are closed or disconnected.

[C2DMessageMonitor] UnauthorizedError: mqtt.js returned Failure on first connection (Not authorized): self signed certificate in certificate chain error.

How can I fix this?

[kclubbresideo]

i am also getting this error with the similar error:
UnauthorizedError: mqtt.js returned Failure on first connection (Not authorized): self signed certificate in certificate chain errror
This is going to be a show stopper for our team to used this extension.