Regression from wmf/1.34.0-wmf.5 ([[ https://www.mediawiki.org/wiki/MediaWiki_1.34/wmf.5 | release notes ]])
=== Error ===
Request URL:
Request ID: `INSERT_ID`
```name=message
Call to a member function getId() on a non-object (null)
```
```name=trace,lines=10
#0 /srv/mediawiki/php-1.34.0-wmf.5/includes/page/WikiPage.php(575): Revision->getId()
#1 /srv/mediawiki/php-1.34.0-wmf.5/includes/page/WikiPage.php(514): WikiPage->loadFromRow(stdClass, integer)
#2 /srv/mediawiki/php-1.34.0-wmf.5/includes/Storage/DerivedPageDataUpdater.php(518): WikiPage->loadPageData(integer)
#3 /srv/mediawiki/php-1.34.0-wmf.5/includes/Storage/DerivedPageDataUpdater.php(751): MediaWiki\Storage\DerivedPageDataUpdater->grabCurrentRevision()
#4 /srv/mediawiki/php-1.34.0-wmf.5/includes/page/WikiPage.php(2009): MediaWiki\Storage\DerivedPageDataUpdater->prepareContent(User, MediaWiki\Storage\RevisionSlotsUpdate, boolean)
#5 /srv/mediawiki/php-1.34.0-wmf.5/includes/page/Article.php(2689): WikiPage->prepareContentForEdit(WikitextContent, NULL, User, NULL, boolean)
#6 /srv/mediawiki/php-1.34.0-wmf.5/extensions/AbuseFilter/includes/AFComputedVariable.php(298): Article->prepareContentForEdit(WikitextContent)
#7 /srv/mediawiki/php-1.34.0-wmf.5/extensions/AbuseFilter/includes/AbuseFilterVariableHolder.php(58): AFComputedVariable->compute(AbuseFilterVariableHolder)
#8 /srv/mediawiki/php-1.34.0-wmf.5/extensions/AbuseFilter/includes/AbuseFilterVariableHolder.php(106): AbuseFilterVariableHolder->getVar(string)
#9 /srv/mediawiki/php-1.34.0-wmf.5/extensions/AbuseFilter/includes/api/ApiQueryAbuseLog.php(215): AbuseFilterVariableHolder->exportAllVars()
#10 /srv/mediawiki/php-1.34.0-wmf.5/includes/api/ApiQuery.php(249): ApiQueryAbuseLog->execute()
#11 /srv/mediawiki/php-1.34.0-wmf.5/includes/api/ApiMain.php(1593): ApiQuery->execute()
#12 /srv/mediawiki/php-1.34.0-wmf.5/includes/api/ApiMain.php(531): ApiMain->executeAction()
#13 /srv/mediawiki/php-1.34.0-wmf.5/includes/api/ApiMain.php(502): ApiMain->executeActionWithErrorHandling()
#14 /srv/mediawiki/php-1.34.0-wmf.5/api.php(87): ApiMain->execute()
#15 /srv/mediawiki/w/api.php(3): include(string)
#16 {main}
```
=== Impact ===
Mostly on fiwiki abuse filter log.
=== Notes ===