@DillipDi : If you deployed the custom profile through code, you may have to sync the JSON of property "profileConfigs" under your folder profile at "/var/dxml/folderprofiles/<profile-id>"
Compare it with "profileConfigs" under "/var/dxml/folderprofiles/global-profile"
Depending on from which version you upgraded there can be new properties added like "XML_EDITOR_CSS_CONFIG", "EXPERIENCE_FRAGMENT_MAPPING", "XML_EDITOR_SNIPPETS"(updated)
Once these changes are made you can validate again.