Error in running Test Case

Hello all,

I ran the test case for cfdemSolverPisoScalar, and it ran fine till the last minute where the following error popped up:
..................................................................
Finalising parallel run
rm: cannot remove ‘*.eps’: No such file or directory
/home/joel/CFDEM/CFDEMcoupling-PUBLIC-2.4.0/tutorials/cfdemSolverPisoScalar/packedBedTemp/parCFDDEMrun.sh: line 45: octave: command not found

** (evince:25321): WARNING **: Error when getting information for file '/home/joel/CFDEM/CFDEMcoupling-PUBLIC-2.4.0/tutorials/cfdemSolverPisoScalar/packedBedTemp/CFD/octave/cfdemSolverPisoScalar_pressureDrop.eps': No such file or directory

** (evince:25320): WARNING **: Error when getting information for file '/home/joel/CFDEM/CFDEMcoupling-PUBLIC-2.4.0/tutorials/cfdemSolverPisoScalar/packedBedTemp/CFD/octave/cfdemSolverPisoScalar_Nusselt.eps': No such file or directory

** (evince:25321): WARNING **: Error setting file metadata: No such file or directory

** (evince:25321): WARNING **: Error setting file metadata: No such file or directory
.....................................................................

Kindly help me, as I am a beginner. I would be very grateful.

Joel