Test failed after pass message

Hello,

I got a problem druing the test.
At the end of the test, there always will be an error after the pass message
" [ERRO][UPF][Pfcp][10.200.200.101:8805] read udp 10.200.200.101:8805: use of closed network connection "
I try a lot to solve this problem, google it for a long time, but it seems no one got any solution.
Does anyone got idea about this problem? It will help me a lot.

Thanks you.

Enviroment:
ubuntu 20.04 LTS
Virtual Box 7.0
i7-12700k

I found the answer in Issue while setting up 5GFREE - #2 by tmchen
It says that it is normal to find out a error after shutdown a test.
If you got a same problem like me,please don’t be afraid and keep your testing.