After the latest CAN FD commits, fetching parameters is no longer possible. Both through PX4 and the dronecan gui I am unable to get the parameters. in PX4, it appears this is failing. https://github.com/AlexKlimaj/PX4-Autopilot/blob/pr-libuavcan-update/src/drivers/uavcan/uavcan_main.cpp#L1042-L1044  With the CAN FD commits removed in this branch, parameters are working. https://github.com/dronecan/libuavcan/tree/python3.10-fix