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？
3 l" d4 @$ {8 m: t$ q- p
' p* m' s. Z6 s( [# q. `( {5 Bconveyor元素的input rule：
( |6 J* ]9 m% R' M$ g$ ?if nparts(coneyor001)<5
pull from buf1 with labor1 using path
else
wait
endif