Getting Error in Purchase Entries, after installing version 14 and GST India Compliance

pymysql.err.OperationalError: (1054, “Unknown column ‘reverse_charge’ in ‘field list’”)

I am unable to do any purchase entry, and there is no rcm entries

You schema is probably out of sync.
Try a bench update --reset or (this method is better/safer) refer to this post/reply by Muzzy