SITL Console message with AC 3.5-rc6-Channel 6 already assigned

When running SITL with AC 3.5.0-rc6 with heli frame, a message(highlighted in red) in the console appears multiple times before the standard EKF messages regarding the IMU. The message states that channel 6 is already assigned. Is this message something I should be concerned with or is it due to a parameter setting?

please disregard. It must have been the parameter file. after I wrote the parameter file and then restarted the sitl. The message went away.