Trying to build "flow.tcl -design sbm" seeing below error

[GRangaRao]

Hi All,

Seeing below error while build sbm, any clue about the error and how to fix it?

Design area 3448 u^2 48% utilization.
area_report_end
check_nonpropagated_clocks
Error: multi_corner.tcl, 203 clock objects do not have a propagated property.
child process exited abnormally

Thanks
Ranga