ballmill example simulation not running

I am trying to run the ballmill example simulation inside fragmentation->milling->ballmill folder. The in.ballmill_init runs fine but the in.ballmill_run crashes with the following error. Please help. The crusher example simulation works fine but not the ballmill one. Thanks in advance!

LIGGGHTS (Version LIGGGHTS-PFM 21.11, compiled 2023-09-18-14:09:39 by oem, git commit unknown, based on LAMMPS 23 Nov 2013)
Reading restart file ...
orthogonal box = (-0.6 -0.16 -0.6) to (0.6 0.16 0.6)
1 by 1 by 1 MPI processor grid
SURFACE/DEFAULT loaded
HERTZ/BREAK loaded
TANGENTIAL/HISTORY loaded
738 atoms
SURFACE/DEFAULT loaded
HERTZ/BREAK loaded
TANGENTIAL/HISTORY loaded
Resetting global state of Fix mill Style mesh/surface from restart file info
SURFACE/DEFAULT loaded
HERTZ/BREAK loaded
TANGENTIAL/HISTORY loaded
Resetting global state of Fix n_neighs_mesh_mill Style property/atom from restart file info
Resetting per-atom state of Fix n_neighs_mesh_mill Style property/atom from restart file info
Resetting global state of Fix tracker_mill Style contacthistory/mesh from restart file info
Resetting per-atom state of Fix tracker_mill Style contacthistory/mesh from restart file info
Fix particledistribution/discrete (id pdd3): distribution based on mass%:
pts3: d=0.000000e+00 (max. bounding sphere) mass%=100.000000%
Fix particledistribution/discrete (id pdd3): distribution based on number%:
pts3: d=0.000000e+00 (max. bounding sphere) number%=100.000000%
Resetting global state of Fix contacthistory Style contacthistory from restart file info
Resetting per-atom state of Fix contacthistory Style contacthistory from restart file info
ERROR: Please increase the number of atom types in the 'create_box' command to match the number of atom types you use in the simulation (/home/oem/CFDEM/LIGGGHTS/src/properties.cpp:98)