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Blocked artifact asset errors now name the exact domain to allowlist in your proxy settings.
What's wrong with this entry?
Anonymous. No account, no email.
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.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.