Error
Request URL: POST www.wikidata.org /w/api.php
Request ID: XOVStQpAMEIAAFu6vqEAAABM
message
BadMethodCallException: Call to a member function hasSlot() on a non-object (null)
trace for Api/ModifyEntity
#0 /srv/mediawiki/php-1.34.0-wmf.8/extensions/Wikibase/lib/includes/Store/Sql/WikiPageEntityRevisionLookup.php(132): Wikibase\Lib\Store\Sql\WikiPageEntityRevisionLookup->loadEntity(stdClass, string) #1 /srv/mediawiki/php-1.34.0-wmf.8/extensions/Wikibase/lib/includes/Store/DispatchingEntityRevisionLookup.php(59): Wikibase\Lib\Store\Sql\WikiPageEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #2 /srv/mediawiki/php-1.34.0-wmf.8/extensions/Wikibase/lib/includes/Store/TypeDispatchingEntityRevisionLookup.php(55): Wikibase\Lib\Store\DispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #3 /srv/mediawiki/php-1.34.0-wmf.8/extensions/Wikibase/repo/includes/Api/ModifyEntity.php(192): Wikibase\Lib\Store\TypeDispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #4 /srv/mediawiki/php-1.34.0-wmf.8/extensions/Wikibase/repo/includes/Api/EditEntity.php(252): Wikibase\Repo\Api\ModifyEntity->applyChangeOp(Wikibase\Repo\ChangeOp\ChangeOps, Wikibase\DataModel\Entity\Item) #5 /srv/mediawiki/php-1.34.0-wmf.8/extensions/Wikibase/repo/includes/Api/ModifyEntity.php(298): Wikibase\Repo\Api\EditEntity->modifyEntity(Wikibase\DataModel\Entity\Item, Wikibase\Repo\ChangeOp\ChangeOps, array) #6 /srv/mediawiki/php-1.34.0-wmf.8/includes/api/ApiMain.php(1595): Wikibase\Repo\Api\ModifyEntity->execute() #7 /srv/mediawiki/php-1.34.0-wmf.8/includes/api/ApiMain.php(531): ApiMain->executeAction() #8 /srv/mediawiki/php-1.34.0-wmf.8/includes/api/ApiMain.php(502): ApiMain->executeActionWithErrorHandling() #9 /srv/mediawiki/php-1.34.0-wmf.8/api.php(87): ApiMain->execute() #10 /srv/mediawiki/w/api.php(3): include(string)
trace for Api/SetClaim
0 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/lib/includes/Store/Sql/WikiPageEntityRevisionLookup.php(132): Wikibase\Lib\Store\Sql\WikiPageEntityRevisionLookup->loadEntity(stdClass, string)
#1 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/lib/includes/Store/DispatchingEntityRevisionLookup.php(59): Wikibase\Lib\Store\Sql\WikiPageEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string)
#2 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/lib/includes/Store/TypeDispatchingEntityRevisionLookup.php(55): Wikibase\Lib\Store\DispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string)
#3 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/repo/includes/EditEntity/MediawikiEditEntity.php(235): Wikibase\Lib\Store\TypeDispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string)
#4 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/repo/includes/EditEntity/MediawikiEditEntity.php(662): Wikibase\Repo\EditEntity\MediawikiEditEntity->getLatestRevision()
#5 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/repo/includes/EditEntity/StatsdSaveTimeRecordingEditEntity.php(73): Wikibase\Repo\EditEntity\MediawikiEditEntity->attemptSave(Wikibase\DataModel\Entity\Item, string, integer, string, boolean)
#6 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/repo/includes/Api/EntitySavingHelper.php(351): Wikibase\Repo\EditEntity\StatsdSaveTimeRecordingEditEntity->attemptSave(Wikibase\DataModel\Entity\Item, string, integer, string)
#7 /srv/mediawiki/php-1.34.0-wmf.6/extensions/Wikibase/repo/includes/Api/SetClaim.php(137): Wikibase\Repo\Api\EntitySavingHelper->attemptSaveEntity(Wikibase\DataModel\Entity\Item, string)
#8 /srv/mediawiki/php-1.34.0-wmf.6/includes/api/ApiMain.php(1593): Wikibase\Repo\Api\SetClaim->execute()
#9 /srv/mediawiki/php-1.34.0-wmf.6/includes/api/ApiMain.php(531): ApiMain->executeAction()
#10 /srv/mediawiki/php-1.34.0-wmf.6/includes/api/ApiMain.php(502): ApiMain->executeActionWithErrorHandling()
#11 /srv/mediawiki/php-1.34.0-wmf.6/api.php(87): ApiMain->execute()
#12 /srv/mediawiki/w/api.php(3): include(string)
#13 {main}Impact
Some actions that API users are trying to perform are aborted with this fatal error.
The rate is relatively low, which suggests it might be due to being specific to certain pages or certain users only.
Notes
Since since at least 1.34-wmf.3.