Comment 4 for bug 1770051

I tried installing the 2.0 snap instead

$ sudo snap install lxd --channel 2.0/stable
lxd (2.0/stable) 2.0.11 from 'canonical' installed

I run lxd init

Juju gives a different error trying to bootstrap.

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ERROR lxdbr0 configured but no config file found at /etc/default/lxd-bridge
It looks like your lxdbr0 has not yet been configured. Please configure it via:

        sudo dpkg-reconfigure -p medium lxd

and then bootstrap again.
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Not only does bootstrap fail, but the error message is wrong because lxd has been installed from a snap not a deb package.