Problem sending command: Sensor command failed

I’m using PI 3 Model B with a relay board that worked fine for a while. Since last month that this relay only works until i reboot the RPi again. After rebooting when i acces the web dashboard and click on the switch to activate this relay, shows the message: “Problem sending command:Sensor command failed”. This message just passes if i remove the device(relay) and setup it again.
Need some help please.

can you try removing and re-adding the raspberry pi device from the cayenne dashboard.

Thank you for the suggestion! Already did that and still the same.

what does tail -f /var/log/myDevices/cayenne.log output.