Failed to parse guest name

[RafalMohammed]

Hii,
I am trying to install vmtop but when i run the command: # sudo ./vmtop.py --vm --limit 10 --sort vcpu_steal it shown just one vm and appear this errors:
Failed to parse guest name
Unexpected error on VM creation: (<class 'subprocess.CalledProcessError'>, CalledProcessError(1, ['pgrep', '852']), <traceback object at 0x7f9e7d30e388>)
where is the issue? @nanzhong @simondeziel @jdesfossez @jbwyatt4 @diunox

[jdesfossez]

sorry for the delay !
any way you still have access to a reproducer case and you could share the output of that pgrep command ?