Update bench on v13

[Errno 13] Permission denied: file: /usr/lib/python3/dist-packages/supervisor/xmlrpc.py line 560
when I am trying to execute bench update on v13 this error occurs
please help me
[Errno 13] Permission denied: file: /usr/lib/python3/dist-packages/supervisor/xmlrpc.py line

It may help to say what operating environment, how bench was installed and whether it has been updated without trouble in the past.

I did get a similar error on v12 to 13 upgrade.
Had a couple of other issues.
Cannot remember what did to resolve.
May have been running bench upgrade with pip3 …