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？
* D6 W* h7 R  O; V5 }1 C" r; l$ t0 k
conveyor元素的input rule：
1 N6 L( ]( t" c/ dif nparts(coneyor001)<5
pull from buf1 with labor1 using path
$ j/ z! Z1 c. M1 P; p. {$ Qelse
% ?7 [9 Y1 u2 s: hwait
5 ~3 Y, b4 v5 R. J" w( g$ J' Oendif