Restore from your backup? The default implementation keeps only one checkpoint. Unless you plugged in a different checkpointing implementation, there's no going back beyond one.
best regards, Roland -- You received this message because you are subscribed to the Google Groups "Project Jupyter" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jupyter/3f2ea6d1-3dc8-4237-9de8-a5caa629b708%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
