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？

  p. y  \4 D! T! q1 ~conveyor元素的input rule：
if nparts(coneyor001)<5
( f" b7 `, T. b4 s) Upull from buf1 with labor1 using path
else
wait
endif