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：
$ A2 E: j; H7 F3 s+ B$ k% C5 ?# tif nparts(coneyor001)<5
3 \2 H- K0 \6 u2 @% M3 Hpull from buf1 with labor1 using path
else
wait
endif