Topology file by ATB or PRODRG

GROMACS version:2020
GROMACS modification: NO
I want to simulate a box of metaloprotein and mixture of water and a ionic liquid in gromacs.
For parametrize ionic liquid , i used ATB server. When i submitted the pdb file, in ATB server, countered this erroe:

Your structure file could not be processed. Error was: Mol_Data Error: Missing connectivities for atoms [38]

how i can solve this problem?