Hi guys, I just bought my first drone, a Q500 Standard from a local guy, the drone was in really bad conditions, the camera wasn't working, and one of the motors didn't respond, I managed to fix those issues (It was just bad wirings) but when I connect to the GUI it says that the IMU sensor wasn't found, I have no Idea where that is or how it looks like, and of course cant fix it, can someone help me please?