What probably matters to youSection of the release
What
When a network proxy blocks artifact asset fetches, the error now names .frame.claudeusercontent.com (or .frame.staging.claudeusercontent.com on staging) and walks through adding it in environment settings, with org-level network rules mentioned as an alternative.
Evidence
so the artifact's content cannot be fetched
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
