I can't use "moveBy"after connect my anafiFPV with Freeflight6 on my iPad.

[GarineHHHHHH]

_cmd_itf_cmd_send_status_cb - Command send status cancel/timeout: ardrone3.Piloting.moveBy ARSDK_CMD_ITF_CMD_SEND_STATUS_CANCELED, done: True

[GarineHHHHHH]

When I connect the UAV with my device ,the Freeflight6 told me to update the battery . Then ,when I use "moveBy(x,y,z,rad)" in my program ,the UAV won't move according to the messages.