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？
5 j; d4 R8 f( r: V* z+ Q/ y; w1 N# _
conveyor元素的input rule：
if nparts(coneyor001)<5
. E+ U4 B9 u: gpull from buf1 with labor1 using path
else
# V6 Q( X% t9 M3 [3 u7 }wait
endif