[lammps-users] lost atoms: original 31250 current 31248?

Dear lammps users,

in a cascade simulation i am getting the error message as “lost atoms: original 31250 current 31248?”

The input is running for Nickle but when i am using Fe.eam.fs potential file it is giving this error.
how to correct it?
what may be the reason for this error?

thanking you
with regards

This typically happens because you blow atoms out of
the simulation box and LAMMPS "loses" them. So you
need to figure out why this is happening and fix it.
Could be too-big timestep, high-energy particles in cascade,
overlapping atoms, bad geometry, etc.