On 2021-08-17 since 7:30 UTC we are experiencing some Jupyter based workspaces failing to create or restore in all regions. We are now rolling back previous working version.
2021-08-17 9:35 UTC - we successfully rolled back the previous working version and creation/restore of Jupyter workspaces works now as expected. As a root cause we identified mishandled process when scaling up server instances, so only creation/restore that triggered instances scale up would fail. We work on the fix and will be released soon after.