I was running a simulation in LAMMPS but got the error :Unexpected empty line in BondCoeffs section (src/read_data.cpp:1821) Last command: read_data data.CdS_water1

LAMMPS LAMMPS General Discussion
1

LAMMPS (23 Jun 2022 - Update 2)
OMP_NUM_THREADS environment is not set. Defaulting to 1 thread. (src/comm.cpp:98)
using 1 OpenMP thread(s) per MPI task
Reading data file …
orthogonal box = (-100.5 -100.5 -100.5) to (100.5 100.5 100.5)
1 by 1 by 1 MPI processor grid
ERROR: Unexpected empty line in BondCoeffs section (src/read_data.cpp:1821)
Last command: read_data data.CdS_water1
this was the complete error I got.
also attaching the data file
data.CdS_water1 (888.3 KB)

i had gone through the LAMMPS documentation,but couldn’t find the error.
it would be very much helpful if someone could find the error.
Unni Krishnan

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Your data file header says there are 3 bond types, but your BondCoeffs section only has 2 entries, hence the spot-on error message that there is an empty line where there should be one with bond coeffs data.