Energy minimization converged to machine precision

GROMACS version:2020
GROMACS modification: Yes/No yes
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Dear Gromacs users
I am simulating protein-ligand complex and during energy, minimization get following message:-
Steepest Descents converged to machine precision in 15664 steps,
but did not reach the requested Fmax < 10.
Potential Energy = -2.3425568e+06
Maximum force = 7.6311267e+02 on atom 2815
Norm of force = 3.2258615e+00

I tried to do energy minimization in 3 steps as well for which MDP files are attached but still, I am getting the same message. I have read many questions regarding it which shows that either I have bad topology or residue clashes. How should I remove these? I looked the topology seems fine to me I don’t know if it has a problem how can I figure out that?
Any suggestions will really help me to sort this problem.
em1.mdp (1.2 KB) em3.mdp (1.2 KB) em2.mdp (1.2 KB)

This is only true if Fmax is large. Yours is perfectly reasonable.