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？

conveyor元素的input rule：
1 R/ q8 X# Y' p2 j' R1 Uif nparts(coneyor001)<5
- s9 i" N, Y3 D; s5 epull from buf1 with labor1 using path
: g2 P; K) L# k8 E6 B# @. l& P' Eelse
wait
endif