I had my laptop running pretty well, slowly going about the process of finding apps that would match what I'd been using on Windows. I cut and paste what I thought was installation for a Terminal with Root Privileges (Sudo 1.9 page); but, I didn't read the page carefully and downloaded python and altered the sudo.config file.

Now, I can no longer use sudo commands and can't run software installer and other applications. I tried making a second account with administrator privileges but it is exactly the same, and authentication is greyed out or access denied.

When I try to execute `sudo su` in terminal, I get the following:

```
sudo: error in /etc/sudo.conf, line 16 while loading plugin "python_policy"
sudo: /usr/lib/sudo/python_plugin.so: No such file or directory
sudo: fatal error, unable to load plugins

```

I can't get in to edit the config file and can't find a default script for Ubuntu 20.04 even if I could. Any suggestions that might avoid a total reinstall would be appreciated?