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？
& q. k9 i. p6 E0 e
! o) a/ i3 n1 B9 }0 Uconveyor元素的input rule：
if nparts(coneyor001)<5
pull from buf1 with labor1 using path
) a( `- U( T/ V+ x6 gelse
wait
endif