cleartool error: Unable to rebase stream

cleartool error: Unable to rebase stream

Can't rebase stream to the foundation baseline. Probably the baseline is
corrupted.
Is it possible to fix this baseline?
cleartool: Error: Version map for baseline is unavailable. cleartool:
Error: Unable to get unlabelled baselines in foundation cleartool: Error:
Unable to determine if configuration is valid cleartool: Error: Unable to
rebase stream
Thanks !!