Errors are output to mom_log at the end of a job

We are using openpbs23.06.06 built from source.
When a job is executed in an environment where the home directory is on NFS and no_root_squash is not attached, a message is output to mom_log at the end of the job. The permission of the user’s home directory is 700.

04/03/2024 14:46:55;0008;pbs_mom;Job;7.kvm-pbs;Started, pid = 5084
04/03/2024 14:47:08;0008;pbs_mom;Job;7.kvm-pbs;Terminated
04/03/2024 14:47:08;0008;pbs_mom;Job;7.kvm-pbs;kill_job
04/03/2024 14:47:08;0001;pbs_mom;Svr;pbs_mom;scan_for_exiting, chdir failed. ERR : Permission denied
04/03/2024 14:47:09;0006;pbs_mom;Hook;pbs_python;run_epilogue_shell;7.kvm-pbs;running epilogue.
04/03/2024 14:47:09;0008;pbs_mom;Job;7.kvm-pbs;no active tasks
04/03/2024 14:47:10;0001;pbs_mom;Svr;pbs_mom;fork_to_user, chdir failed. ERR : Permission denied
04/03/2024 14:47:10;0008;pbs_mom;Job;7.kvm-pbs;no active tasks
04/03/2024 14:47:10;0008;pbs_mom;Job;7.kvm-pbs;kill_job

If I use openpbs20.0.0 in the exact same NFS environment, no message is output.

I checked the source and it seems to have been changed so that does not output the error message, but 23.06.06 does.

It seems that the error only appears in momlog and does not affect the execution of the job, but I wonder if I should leave it alone.