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？

( ]& Z, Y. g4 \2 o' d+ D: ~conveyor元素的input rule：
if nparts(coneyor001)<5
pull from buf1 with labor1 using path
2 V3 T3 h* _2 J# gelse
wait
endif