Attempt to add part at undefined sensor 1 on conveyor coneyor001？

dd13616

Attempt to add part at undefined sensor 1 on conveyor coneyor001是怎么回事？

- b! B) L: f! tconveyor元素的input rule：
3 M( Q0 _: F% nif nparts(coneyor001)<5
pull from buf1 with labor1 using path
else
  H/ T0 S6 ?0 S* k/ Hwait
endif