The insights-client service fails to start due to PermissionError: [Errno 13] Permission denied: 'S.gpg-agent'

Issue

• The insights-client service failed to start with the following error:

  [root@rhel-client ~]# systemctl status insights-client -l
  × insights-client.service - Insights Client
      Loaded: loaded (/usr/lib/systemd/system/insights-client.service; static)
      Active: failed (Result: exit-code) since Wed 2024-09-18 11:22:02 CEST; 1min 22s ago
    Duration: 4.090s
  TriggeredBy: ● insights-client.timer
        Docs: man:insights-client(8)
     Process: 224207 ExecStart=/usr/bin/insights-client --retry 3 (code=exited, status=1/FAILURE)
    Main PID: 224207 (code=exited, status=1/FAILURE)
         CPU: 1.253s
  
  Sep 18 11:22:01 rhel-client insights-client[224207]:   File "/usr/lib64/python3.9/shutil.py", line 734, in rmtree
  Sep 18 11:22:01 rhel-client insights-client[224207]:     _rmtree_safe_fd(fd, path, onerror)
  Sep 18 11:22:01 rhel-client insights-client[224207]:   File "/usr/lib64/python3.9/shutil.py", line 690, in _rmtree_safe_fd
  Sep 18 11:22:01 rhel-client insights-client[224207]:     onerror(os.unlink, fullname, sys.exc_info())
  Sep 18 11:22:01 rhel-client insights-client[224207]:   File "/usr/lib64/python3.9/shutil.py", line 688, in _rmtree_safe_fd
  Sep 18 11:22:01 rhel-client insights-client[224207]:     os.unlink(entry.name, dir_fd=topfd)
  Sep 18 11:22:01 rhel-client insights-client[224207]: PermissionError: [Errno 13] Permission denied: 'S.gpg-agent'
  Sep 18 11:22:02 rhel-client systemd[1]: insights-client.service: Main process exited, code=exited, status=1/FAILURE
  Sep 18 11:22:02 rhel-client systemd[1]: insights-client.service: Failed with result 'exit-code'.
  Sep 18 11:22:02 rhel-client systemd[1]: insights-client.service: Consumed 1.253s CPU time.
  

• The issue started occurring after Insights Core 3.4.5-1 was released in July 2024.