Upgrade failed 8.2.1 -> 8.5.1 with weird error

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Doctrine \ ORM \ ORMException
Entity of type Concrete\Core\Entity\Attribute\Value\PageValue is missing an assigned ID for field 'attribute_key'. The identifier generation strategy for this entity requires the ID field to be populated before EntityManager#persist() is called. If you want automatically generated identifiers instead you need to adjust the metadata mapping accordingly.

Anyone have any ideas?

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psyren replied on at Permalink Reply
My site is really basic:http://carpet-cleaning-adelaide.com.au...

Very simple tradesperson website, a homepage, landing pages for services, and a small blog (that I built using the concrete5 blog example tutorial). I have no idea why I'm getting this error when I attempt upgrade to 8.5.1?
psyren replied on at Permalink Reply
I can the upgrade from the command-line and I got this:

** Executing migration: 20180831213421

In ORMException.php line 87:

Entity of type Concrete\Core\Entity\Attribute\Value\PageValue is missing an assigned ID for field 'attribute_key'. The identifier
generation strategy for this entity requires the ID field to be populated before EntityManager#persist() is called. If you want a
utomatically generated identifiers instead you need to adjust the metadata mapping accordingly.
psyren replied on at Permalink Reply
I cut off a line, it actually says:

Refreshing block type express_entry_list
** Executing migration: 20180831213421
then it gets that error..