Thunderbird on 20.10 is broken

[Colin Law]

On Tue, 27 Oct 2020 at 14:38, Bret Busby <bret.busby at gmail.com> wrote:
>
> Hello.
>
> I do not know whether the package maintainer(s) for Thunderbird for
> Ubuntu, subscribe to this list, but, Thunderbird on UbuntuMATE 20.10
> does not load, but instead, displays an error message;
>
> "
> XML Parsing Error: undefined entity
> Location: chrome://messenger/content/messenger.xhtml
> Line Number 905, Column 3:
>   <key id="openLightningKey"
> --^
> "
>

You can use
ubuntu-bug thunderbird
to report the problem.

Colin