Hi @sns ,
This log roughly means that when the Custom Upgrade Action.V14ToV15Upgrade is executed, the upgrade 'Rating' feature throws an exception and the upgrade is completed with errors. Review the upgrade log file in E:\Diag_logs\SiteUpgrade-20210204-065121-463.log.
Is there an error reported on the UI? Does this 'Ratings feature' refer to the Ratings in List and Library?
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