Sorry to bother you again, but I need help. Now the solver scans the cube and returns a JSON with the readings, but then it returns me the following error:

'''
2019-12-06 14:15:38,943 mindcuber.py ERROR: There should be either 2 or 4 but we have [(side-R31-Gr, side-F24-Rd)]
Traceback (most recent call last):
File "./mindcuber.py", line 520, in
mcube.scan()
File "./mindcuber.py", line 380, in scan
self.rgb_solver.crunch_colors()
File "/usr/local/lib/python3.5/dist-packages/rubikscolorresolver/init.py", line 1806, in crunch_colors
self.sanity_check_edge_squares()
File "/usr/local/lib/python3.5/dist-packages/rubikscolorresolver/base.py", line 964, in sanity_check_edge_squares
self.sanity_check_edges_red_orange_count_for_orbit(orbit_id)
File "/usr/local/lib/python3.5/dist-packages/rubikscolorresolver/base.py", line 894, in sanity_check_edges_red_orange_count_for_orbit
fix_orange_vs_red_for_color("green", green_red_or_orange_edges)
File "/usr/local/lib/python3.5/dist-packages/rubikscolorresolver/base.py", line 799, in fix_orange_vs_red_for_color
% target_color_red_or_orange_edges
Exception: There should be either 2 or 4 but we have [(side-R31-Gr, side-F24-Rd)]
2019-12-06 14:15:39,776 mindcuber.py INFO: Shutting down
'''

What should I do?