ERROR No such moleculetype

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GROMACS version: 2020
GROMACS modification: No
forcefield I am using: charmm36
Here post your question:

Hi,
I ran grompp -f EM.mdp -c system.pdb -p system.top -o em.tpr and I got this error:

ERROR 1 [file system_GMX_charmm36.top, line 22]:

  • No such moleculetype sls *

-------------------------------------------------------
Program: gmx grompp, version 2020
Source file: src/gromacs/gmxpreprocess/toppush.cpp (line 2511)

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

By the way, I have the same error for other molecule types as well when I remove molecule sls. Attached is my topology file. I have included sls molecule type in sls.itp. And I tried dos2unix to convert the topology file but didn’t fix the issue.

system_GMX_charmm36.top (891 Bytes)