some produced images do not contain object of interest

[monajalal]

I notice that some produced images do not contain object of interest, could you please suggest how to fix it? here is an example

It took 1 tries to place 55917-700lf.001
It took 1 tries to place 55917-700lf.002
It took 1 tries to place 55917-700lf.003
It took 1 tries to place 55917-700lf.004
It took 1 tries to place 55917-700lf.005
It took 1 tries to place 55917-700lf.006
It took 1 tries to place 55917-700lf.007
It took 1 tries to place 55917-700lf.008
It took 1 tries to place 55917-700lf.009
It took 1 tries to place 55917-700lf

^^^ looking at logs I can see the object was placeable