interFoam error message
 

--> FOAM FATAL IO ERROR:
cannot find file

file: /home/ishan/OpenFOAM/ishan-v1612+/run/DTCHull/0/p_rgh at line 0.

From function regIOobject::readStream()
in file db/regIOobject/regIOobjectRead.C at line 237.

I get the error message mentioned below for interFoam solver for DTCHull tutorial.

Your help is highly appreciated.:)