Can't drag the red pin

[hrisbh10]

Traceback (most recent call last):
File "montecarlofinal.py", line 504, in
main()
File "montecarlofinal.py", line 63, in main
game_play()
File "montecarlofinal.py", line 82, in game_play
human_move(board, help_show)
File "montecarlofinal.py", line 322, in human_move
lx,ly = animate_probable_position(board, lx, int((pos_x - x_margin) / element_size), color) #PS
NameError: name 'color' is not defined