pch2csd: List index out of range in csdgen.py

list index out of range

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  File "/home/muranyia/.local/lib/python3.8/site-packages/pch2csd/app.py", line 164, in main
    convert_pch2(args.arg)
  File "/home/muranyia/.local/lib/python3.8/site-packages/pch2csd/app.py", line 98, in convert_pch2
    udos = zak.connect_patch(p)
  File "/home/muranyia/.local/lib/python3.8/site-packages/pch2csd/csdgen.py", line 115, in connect_patch
    udos = deepcopy({m.id: Udo(p, m) for m in p.modules})
  File "/home/muranyia/.local/lib/python3.8/site-packages/pch2csd/csdgen.py", line 115, in <dictcomp>
    udos = deepcopy({m.id: Udo(p, m) for m in p.modules})
  File "/home/muranyia/.local/lib/python3.8/site-packages/pch2csd/csdgen.py", line 30, in __init__
    self.udo_variant = self._choose_udo_variant(len(ins))
  File "/home/muranyia/.local/lib/python3.8/site-packages/pch2csd/csdgen.py", line 61, in _choose_udo_variant
    tpl_v1_ins = self.tpl.ins[1].types

This happens with every patch that has no invalid UDOs.