ERROR(IMPSP-365) Analysis of innovus failure to add endcap

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ERROR(IMPSP-365)：Design has inst with SITE (xx_site)，but the floorplan has no rows defined for this site.Any location for such instance will be illegal，create row for this this site to avoid.

The end cap cannot be added continuously on a certain side because the row corresponding to the site is missing. The solution is:

setEndCapMode -create_rows true