I wanted to upgrade my Ubuntu 18.04 to 20.04. When I try to do that I got the following error:

```none
Your python3 install is corrupted. Please fix the '/usr/bin/python3' symlink.

```

I've looked for solutions, and I found it can be solved by:

```none
sudo rm /usr/bin/python3 && sudo ln -s /usr/bin/python3.8 /usr/bin/python3
do-release-upgrade

```

but when I do that I got:

```none
bash: /usr/bin/do-release-upgrade: /usr/bin/python3: bad interpreter: No such file or directory

```

The output of `type -a python3; file /usr/bin/python3` is:

```none
bash: type: python3: not found /usr/bin/python3: broken symbolic link to /usr/bin/python3.8

```

And the output of `file /usr/bin/python3.6` is:

```none
/usr/bin/python3.6: cannot open `/usr/bin/python3.6' (No such file or directory)

```

What should I do?