for some help about Lammps-reaxc

Please post LAMMPS questions to the LAMMPS mailing list. The source of your problem is explained in the error message.

Inconsistent ffield file (reaxc_ffield.cpp)

The manual gives you a hint as to why:

“Note: Force field files are different for the original or lg corrected pair styles, using wrong ffield file generates an error message.”