[lammps-users] Possible problem in data file

Steve, LAMMPS users,
I am trying to do a NVT simulation (input script in.sw) in which I am reading the coordinates from a data file (coordinates.txt). For now I have kept the two atom types the same just to get started. The error I encounter is as follows:

coordinates.txt (498 KB)

Si.sw (653 Bytes)

in.sw (770 Bytes)