"attempt to index global 'self' (a nil value)" Bug, even when commented

[mitterdoo]

Hi. I'm trying to get someone's SENT fixed and upgraded (yes I have permission), and this error comes up EVERY time I spawn it:

[!toybox_119773:539] attempt to index global 'self' (a nil value)

Yes I am using toybox, and it's in my workshop. It always comes up no matter WHAT. I even put the -- before the command, yet it still appears. I'll give you the two lines (two because gmod is bugged and it shows an error for the line after the real error):

  --      if self.Pilot:KeyDown(IN_USE) then
--            self.Accel={FWD=0,RIGHT=0}

If ANYBODY could help, please just help me. I've been struggling with this error ever since I put it on toybox. Thank you ahead of time.