Undefined method `resolve_baked_field` when precompiling themes

[csmu (Keith John Hutchison - Ceiteach Seán Mac Úistin)]

Based on the solution another post with a similar issue.

Rebuild fails from theme error, site won't start

Ah, it’s possible that the old container was cleaned up when you ran launcher cleanup (since it wasn’t running).

Ok, can you try editing your app.yml file, and add this under the env section. Make sure the indentation is the same as all the other variables in that section.

DONT_PRECOMPILE_CSS: 1

Then try rebuilding again.

I did the following

1. Added DONT_PRECOMPILE_CSS: 1 to /var/discourse/containers/app.yml
2. /var/discourse/launcher rebuild app which worked
3. Selected a default theme in {{host}}/admin/customize/themes … no default theme was selected.
4. Commented out DONT_PRECOMPILE_CSS: 1 in /var/discourse/containers/app.yml
5. /var/discourse/launcher rebuild app again, which worked.