Error while running Depletion example

[Karthik]

Hi Paul,
I get the following error while running the example of depletion provided. Could you help me to solve this. Thank you.

[Karthik]

I think I could get around this problem by writing it in two steps.

Instead of,
operator = openmc.deplete.Operator(geometry,settings, “/home/karthik/depletion_chains/chain_casl_sfr.xml”)

I wrote this,
model=openmc.model.Model(geometry,None,settings)
operator = openmc.deplete.Operator(model, “/home/karthik/depletion_chains/chain_casl_sfr.xml”)

Thank you.