Error Error: BacnetError Class: SERVICES (5) Code: REJECT_UNRECOGNIZED_SERVICE (67)

I am using bacnet to read and write about panel lighting. I managed to control the panel for a while, but now I get this Error: BacnetError Class: SERVICES (5) Code: REJECT_UNRECOGNIZED_SERVICE (67)

Does anyone know what it is and how to solve it?