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？
$ c6 [6 G' X# `0 J  {
. ~2 i5 M# r/ k; b5 m: Y5 Mconveyor元素的input rule：
1 r1 g' S6 H7 X; X/ Q0 Hif nparts(coneyor001)<5
, C% \! k, ~1 j* A3 zpull from buf1 with labor1 using path
* O: Z& Y; J) ~8 ielse
; O- P/ z* B* b+ ]) ~wait
endif