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？
9 j! i) L7 q1 F9 @" s
conveyor元素的input rule：
6 j! {7 g  w" s/ @. ]+ ]* Gif nparts(coneyor001)<5
- D6 x) Z9 e* b' Apull from buf1 with labor1 using path
else
, p* m8 Q! E" x+ I" p5 ^wait
- M& m0 I* r" {- D  V* Z+ iendif