LAMMPS (2 Aug 2023 - Update 1)
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 ...
ERROR on proc 0: Unexpected end of data file (src/read_data.cpp:1156)
Last command: read_data       output/lammps/in/dipole_b01_1.0.lammps