Limited Support
Our team is currently on holiday, so support will be limited during this period. Response times may be slower than usual, and some inquiries may be delayed.
We appreciate your patience and understanding, and we’ll resume our usual support by the end of August.
That's disappointing to hear for a product like this.
How did this happen after the most recent update?
And why is this not failing for the other domain (they use the same user database)?
I mean they literally use the same table for wp_usermeta and wp_users in the same MySQL database. So why would that fail for one, and not for the other?
Fixed it myself ... thanks for the hint where to look.
This is how I fixed the issue - wasn't that hard once you know where to look.
1. Made a backup of the tables wp_usermeta and wp_users.
2. Determine what records in wp_usermeta is no longer linked to an existing user (NULL).
SELECT * FROM wp_usermeta LEFT OUTER JOIN wp_users on wp_usermeta.user_id=wp_users.ID WHERE wp_users.ID IS NULL
3. If all looks good, remove these rows
DELETE wp_usermeta FROM wp_usermeta LEFT OUTER JOIN wp_users on wp_usermeta.user_id=wp_users.ID WHERE wp_users.ID IS NULL
4. Test and verify if everything works as it should.
