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：
+ `5 Z* p, p6 e5 z2 V& |4 P5 J: Rif nparts(coneyor001)<5
: G1 w5 b5 O) C* s) r9 |pull from buf1 with labor1 using path
: x; m7 t1 x" o3 n! celse
wait
9 v: C; j; Q9 a; \# B/ Pendif