Sophos Antivirus for Linux Free Edition - Error Accessing file

I am continually getting a Sophos Anti-Virus Alert dialog (SAVNotifier) complaining about an file access error. The specifics of the dialog are.

Error scanning file
/home/<username>/.pyenv/shims/.pyenv-shim
Access to the file has been denied"

edit: The log entry is as follows:

Category: log.error
Event: Error occurred while scanning /home/<username>/.pyenv/shims/.pyenv-shim: 0x3c: Unable to write to talpa socket (Open). (The operation was denied.)

I have On-Access scanning enabled and am running on Ubuntu Gnome 17.10.

The error is specific only to the pyenv shim's .pyenv-shim file - but the file has 775 permissions so I'm not really sure why it's getting this error, and only this one type of error ever.

I would like to know:

• Why is Sophos throwing this error?
• Why (or likely why) is ~/.pyenv/shims/.pyenv-shim un-scannable?
• Is there a way to set an exclude location in configuration that the On-Access process would obey... as opposed to individual savscan -exclude [PATH] calls? permanent excludes for PC and Mac seem to be set in the Sophos Home Free cloud management interface.

Also, why are all the documentation references to Sophos Anti-Virus for Linux 9?

The program's version reported (savscan --version) is:

Product version           : 5.47.0

Engine version            : 3.72.1

Virus data version       : 5.53

User interface version  : 2.03.072

Platform                     : Linux/AMD64

Released                    : 17 July 2018

Thanks for any help/info you can provide.