Running Molecular Dyanamic Simulations with Dimers - No default Per. Imp. Dih. types

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GROMACS version: GROMACS/2024.3-cpeAMD-24.03-rocm (2024.3, MPI)
GROMACS modification: No
I am having troubles simulating a dimer structure of my protein.

The monomer simulations run perfectly, and running the simulation of the monomer interacting with DNA run perfectly as well, but when I attempt to simulate a dimer of the structure, I get the error message:

gmx_mpi editconf -f model.gro -d 0.8 -bt dodecahedron -o box.gro

ERROR 1 [file topol_Protein_chain_A.itp, line 54193]:
No default Per. Imp. Dih. types

ERROR 2 [file topol_Protein_chain_A.itp, line 54497]:
No default Per. Imp. Dih. types

ERROR 3 [file topol_Protein_chain_B.itp, line 54193]:
No default Per. Imp. Dih. types

ERROR 4 [file topol_Protein_chain_B.itp, line 54497]:
No default Per. Imp. Dih. types

How can I check this issue? Is there possibly something wrong with my PDB file? Where do I check the PDB to make sure the structures are coherent?

Here is the forcefield, just in case:

1: OL15 nucleic (Zgarbova et al., J. Chem. Theory Comput. 11, 5723-36, 2015

Thanks so much ahead of time,

M.