WaypointMission Error: The aircraft home point is not recorded yet

Please check the GPS signal strength. If the aircraft havn't recorded a return home point yetm this error may occur. If the GPS signal strength is strong, the aircraft will record the return home point automaticallyl If the GPS signal strength is weak, user can call setHomeLocationUsingAircraftCurrentLocation or setHomeLocation to record a return home point. If the aircraft has a RTK function, please check if the RTK has enabled or not. If the RTK signal is weak, this error may occur as well. Then you can disable the RTK function and then run a waypointMission. As a matter of fact, this error will occur because the GPS LEVEL is smaller or equal to 3. If the RTK's positioning solution is FIX, the GPS LEVEL will be greater or equal to 5.