Where is the place of including itp file of co-solvent?

GROMACS version:
GROMACS modification: Yes/No
I am trying run a simulation for a glycoprotein in a mixture solvent including water and ionic liquide, using parameters from swissparam.
I modified the topol.top file generated by pdb2gmx and added the following statement, before all other lines referring to the protein or ions :

#include “ligand.itp”
and that worked and I can run simulation in water without any problem.

But, about the .itp file of co-solvent, I tried different places such as after and before lines referring to the protein or ions and water,and every time after

gmx grompp -f ions.mdp -c solv.gro -p topol.top -o ions.tpr

I countered identical error:

Fatal error:
Syntax error - File C10.itp, line 7
Last line read:
'[ atomtypes ] ’
Invalid order for directive atomtypes

can you advice me how resolve this issue? or send an example of topol.top file?

difficult to say without looking at the topology file. Can you upload your topol.top file?