Autodock ZeroDivisionError

Hello! Using autodock vina for flexible docking, there is an error that pops up when choosing active torsions for the selected protein residues.

File “C:\Program Files (x86)\MGLTools-1.5.6\lib\site-packages\PyBabel\”, line 137, in assignHybridization

  • self.valence_two()*

File “C:\Program Files (x86)\MGLTools-1.5.6\lib\site-packages\PyBabel\”, line 266, in valence_two

  • angle1 = bond_angle(k.coords, a.coords, l.coords)*

File “C:\Program Files (x86)\MGLTools-1.5.6\lib\site-packages\PyBabel\”, line 47, in bond_angle

  • raise ZeroDivisionError(“Input used:”, a, b, c)*
    ZeroDivisionError: (‘Input used:’, [2.0720000000000001, 17.943000000000001, 5.6269999999999998], [2.0720000000000001, 17.943000000000001, 5.6269999999999998], [2.0720000000000001, 17.943000000000001, 5.6269999999999998])

Does anyone know the cause for this error or how to troubleshoot it? Thank you!