In System admin -> Activation it shows that paging pro as a registered module with Expiration Date 2043-01-18 (Free Updates until 2023-09-17) The deployment ID, etc has not changed.
I’ve searched and cannot seem to find an answer - any help would be appreciated.
Go to mysql and select all of the records in the table and remove the duplicate keys. In theory, both records with the same key should be the same. After that, rerun the upgrade and you should be good to go.