Error 1 *No Such Molecule NA*

Hello Team,

GROMACS version: 2022

Upon executing the below command, I am facing the following error

gmx grompp -f minim.mdp -c test_solv_ions.gro -p -o em.tpr
ERROR 1 [file, line 115603]:
  No such moleculetype NA

There was 1 note

Program:     gmx grompp, version 2022.2
Source file: src/gromacs/gmxpreprocess/toppush.cpp (line 2558)

Fatal error:
There was 1 error in input file(s)

How to fix this error?

Hi @ericirrgang,

Could you please help me in troubleshooting this problem?