Errors on mini 3 after repairs

I recently got a DJI mini 3 with a broken front left arm. These are all the repairs I have done and the state of the drone after each:

• Replaced front left arm
  • Broke GPS ribbon cable
  • Small plastic cube came off the gimbal cable
• Replaced GPS ribbon cable with one from a M4p
  • Now flies
  • Gimbal stuck error (yaw/roll don't move, but all axes move manually)
• Replaced gimbal cable with one from a M4p
  • Damaged pitch motor ribbon cable during disassembly, replaced arm and motor with one from a M4p
  • Gimbal is now detached from the drone
  • No errors, gimbal moves when held
• Reattached gimbal
  • Gimbal does not move, no video feed
  • Tons of errors (see pictures)

I'm confused by the downward vision sensor error. I didn't mess with anything but the gimbal after I got it working while detached other than to try and address these issues.