"Error: all pair coeffs are not set"

LAMMPS LAMMPS Beginners
1

Dear LAMMPS users,
My model has 3 atom types, Ni Ti & C. I wanted to use meam potential twice so I added these lines

pair_style hybrid meam/c lj/cut 7.788
pair_coeff * * meam/c library_NiTi.meam Ni Ti NiTi.meam Ti Ni NULL
pair_coeff * * meam/c libraryC.meam C C.meam NULL NULL C
pair_coeff 2 3 lj/cut 1.7209e-3 2.943173
pair_coeff 1 3 lj/cut 1.83205e-3 3.1152

But I found the error “ERROR: All pair coeffs are not set (src/pair.cpp:243)”
Please let me know how to skip this overwrite error.

Thanking you
Shathi Akhter
BSc student, Bangladesh University of Engineering and Technology

2

Please see the documentation for pair style hybrid how you can use manybody potentials multiple times.
Otherwise, the second pair_coeff statement will wipe out the effect of the first and thus trigger the error you have seen.