Postprocess utility gives fatal error when used to compute wallShearStress with MPPICInterFoam

When invoking the postprocess utility after the simulation is completed, the postprocess utility gives:

--> FOAM FATAL ERROR: Unable to find turbulence model in the database

From function bool Foam::functionObjects::wallShearStress::execute()
in file wallShearStress/wallShearStress.C at line 217.

when used to compute the wall shear stress with MPPICInterFoam:

MPPICInterFoam -postProcess -func 'wallShearStress'

Can be reproduced using the twoPhasePachuka tutorial.