I replaced the landing skid on my Phantom 4 Pro that was bent from a particularly hard landing. The bird was flying fine, no errors or problems, just a bent skid. After replacing the skid and carefully reassembling my drone I get an error message - NO1 ESC error, NO2..., NO3... and NO4..... Restart and if the problem continues, refer to DJI. As the drone was operating fine before what I thought was a simple repair it must be something I did or didn't do. Any suggestions on how to diagnose this issue? Any help would be appreciated.