Issue when download mission from vehicle in qgrouncontrol

Good day!
So I tried to build qgroundcontrol custom example following steps from here

everything goes fine and I succeed to build it and create mission with it, the issue I got is, when I download the mission from the drone, it display launch point and one extra waypoint located in eastern african continent which off course I never place any waypoint on that location. so what did I missing? if its the issue in mission creation process it would be nice to pinpoint my mistake, or if there any solution in locating the right code related to mission creation or loading mission from the drone, it would be nice. Thank you