ERROR: Incorrect args for pair coefficients (../pair_tersoff.cpp:275)

Dear LAMMPS Users,
when I try to start calculations using the files attached, I obtain the following error communication:

  ERROR: Incorrect args for pair coefficients (../pair_tersoff.cpp:275)

Please, look on the files attached and let me know where is my mistake.
Thanks in advance.

Bohdan Andriyevskyy

data.gansc336 (4.54 KB)

GaN.tersoff (1.7 KB)

in.300K (1.73 KB)

Dear LAMMPS Users,
when I try to start calculations using the files attached, I obtain the
following error communication:

ERROR: Incorrect args for pair coefficients (../pair_tersoff.cpp:275)

Please, look on the files attached and let me know where is my mistake.

please keep in mind that this is a mailing list for user discussions,
not a "please fix my input" service. thus please have another look at
the documentation (very carefully) and figure it out yourself. that is
what documentation is for. this may take a little longer when you are
a beginner, but it will help you a lot in the future as it teaches you
also the style of how something is described in the documentation and
how to interpret what it says. if, however, you can prove that the
documentation disagrees with how LAMMPS works, then please point out
exactly where and why, and people will take a look.

thanks for your understanding,
      axel.