Sorry you are having trouble.
If you installed cacher using the package from qubes-task then two changes are
made.
- The repository definitions are changed from
https://
to
http://HTTPS///
- An entry is made in
/etc/qubes/policy.d/30-user.policy
setting the
default update for all templates (except Whonix) to cacher.
You must revert these changes.
The line you have inserted in 30-user.policy looks good.
Make sure that you revert the change made in 1 above. (You can either do
this manually in each qube, or do it with salt -
sudo qubectl --skip-dom0 --targets=QUBE NAMES state.apply cacher.restore_templates
(Also check the repository definitions in the Whonix templates - these
should not have been altered - if they have it’s a bug.)
Let us know how you get on.
I never presume to speak for the Qubes team.
When I comment in the Forum or in the mailing lists I speak for myself.