UPDATE_ROLLBACK_FAILED
Stuck with UPDATE_ROLLBACK_FAILED
Published: Monday, Oct 18, 2021 Last modified: Thursday, Sep 28, 2023
Cloudformation is trying to roll back but cannot do as some underlying resource is missing. E.g. a layer is removed.

Retry the rollback and even give you an option to skip the resource that won’t roll back in Advanced.
Once you resolve that, then you can re-deploy.