T195692: Attempt to undelete page causes error: Fatal exception of type IncompleteRevisionException: user_text field must not be !

Phabricator Link	T195692
Status	resolved
Priority	high (red)
Author	[1]
Owner	daniel (Daniel Kinzler)
Projects	MediaWiki-Revision-deletion MW-1.32-notes (WMF-deploy-2018-09-25 (1.32.0-wmf.23)) Core-Platform-Team-Old (CPT-Q1-Jul-Sep-2018) (Closed) Multi-Content-Revisions (Done) Wikimedia-production-error (Found longer ago)
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Related Gerrit Changes:

Change	Subject	Status	Owner	Created	Last Modified	Project
435822	Use "Unknown user" instead of an empty user name.	MERGED	Daniel Kinzler	28 May 2018	24 Sep 2018	mediawiki/core

Property "Author" has a restricted application area and cannot be used as annotation property by a user.