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？
! d! C  F# {4 c6 U! {' {
conveyor元素的input rule：
, M1 X( \, g* I: _; mif nparts(coneyor001)<5
$ O3 k& @( b+ R4 mpull from buf1 with labor1 using path
0 }4 ?7 {# ?3 A! K. N" a+ P0 s5 Belse
wait
' S4 c( G! X6 I6 r9 p% Lendif