What
Restoring a snapshot of your files can now fail with a specific reason. It applies when the upload being restored was made before the earlier environment had taken in any of your files. Claude Code shows one wording to you and a separate one to the model, explaining that a restore cannot build on that upload yet.
Why
In this case you get an exact explanation instead of a vaguer failure.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
Which kinds of session can reach this restore path is not established.