Seems something is corrupted on some wiki
```
5 MediaWiki\Storage\SqlBlobStore::fetchBlob: Bad data in text row 5191150. [Called from MediaWiki\Storage\SqlBlobStore::fetchBlob in /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/SqlBlobStore.php
```
Triggering URL: https://de.wikipedia.org/w/index.php?title=Ahmadiyya&limit=500&action=history
Logstash: https://logstash.wikimedia.org/app/kibana#/doc/logstash-*/logstash-2018.08.29/mediawiki/?id=AWWFXFYy8VFZOIjHiQmC
Stacktrace:
```
#0 /srv/mediawiki/php-1.32.0-wmf.18/includes/debug/MWDebug.php(309): MWExceptionHandler::handleError(integer, string, string, integer, array, array)
#1 /srv/mediawiki/php-1.32.0-wmf.18/includes/debug/MWDebug.php(164): MWDebug::sendMessage(string, array, string, integer)
#2 /srv/mediawiki/php-1.32.0-wmf.18/includes/GlobalFunctions.php(1148): MWDebug::warning(string, integer, integer, string)
#3 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/SqlBlobStore.php(356): wfLogWarning(string)
#4 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/SqlBlobStore.php(281): MediaWiki\Storage\SqlBlobStore->fetchBlob(string, integer)
#5 /srv/mediawiki/php-1.32.0-wmf.18/includes/libs/objectcache/WANObjectCache.php(1246): Closure$MediaWiki\Storage\SqlBlobStore::getBlob(boolean, integer, array, NULL)
#6 /srv/mediawiki/php-1.32.0-wmf.18/includes/libs/objectcache/WANObjectCache.php(1119): WANObjectCache->doGetWithSetCallback(string, integer, Closure$MediaWiki\Storage\SqlBlobStore::getBlob;515, array)
#7 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/SqlBlobStore.php(284): WANObjectCache->getWithSetCallback(string, integer, Closure$MediaWiki\Storage\SqlBlobStore::getBlob;515, array)
#8 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/RevisionStore.php(1382): MediaWiki\Storage\SqlBlobStore->getBlob(string, integer)
#9 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/RevisionStore.php(1319): MediaWiki\Storage\RevisionStore->loadSlotContent(MediaWiki\Storage\SlotRecord, NULL, NULL, NULL, integer)
#10 [internal function]: Closure$MediaWiki\Storage\RevisionStore::emulateMainSlot_1_29#2(MediaWiki\Storage\SlotRecord)
#11 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/SlotRecord.php(306): call_user_func(Closure$MediaWiki\Storage\RevisionStore::emulateMainSlot_1_29#2;510, MediaWiki\Storage\SlotRecord)
#12 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/SlotRecord.php(512): MediaWiki\Storage\SlotRecord->getContent()
#13 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/RevisionSlots.php(149): MediaWiki\Storage\SlotRecord->getSize()
#14 [internal function]: Closure$MediaWiki\Storage\RevisionSlots::computeSize(integer, MediaWiki\Storage\SlotRecord)
#15 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/RevisionSlots.php(150): array_reduce(array, Closure$MediaWiki\Storage\RevisionSlots::computeSize;603, integer)
#16 /srv/mediawiki/php-1.32.0-wmf.18/includes/Storage/RevisionStoreRecord.php(160): MediaWiki\Storage\RevisionSlots->computeSize()
#17 /srv/mediawiki/php-1.32.0-wmf.18/includes/Revision.php(707): MediaWiki\Storage\RevisionStoreRecord->getSize()
#18 /srv/mediawiki/php-1.32.0-wmf.18/includes/actions/HistoryAction.php(726): Revision->getSize()
#19 /srv/mediawiki/php-1.32.0-wmf.18/includes/actions/HistoryAction.php(486): HistoryPager->historyLine(stdClass, stdClass, boolean, boolean, boolean)
#20 /srv/mediawiki/php-1.32.0-wmf.18/includes/pager/IndexPager.php(439): HistoryPager->formatRow(stdClass)
#21 /srv/mediawiki/php-1.32.0-wmf.18/includes/actions/HistoryAction.php(236): IndexPager->getBody()
#22 /srv/mediawiki/php-1.32.0-wmf.18/includes/actions/FormlessAction.php(43): HistoryAction->onView()
#23 /srv/mediawiki/php-1.32.0-wmf.18/includes/MediaWiki.php(501): FormlessAction->show()
#24 /srv/mediawiki/php-1.32.0-wmf.18/includes/MediaWiki.php(294): MediaWiki->performAction(Article, Title)
#25 /srv/mediawiki/php-1.32.0-wmf.18/includes/MediaWiki.php(868): MediaWiki->performRequest()
#26 /srv/mediawiki/php-1.32.0-wmf.18/includes/MediaWiki.php(525): MediaWiki->main()
#27 /srv/mediawiki/php-1.32.0-wmf.18/index.php(42): MediaWiki->run()
#28 /srv/mediawiki/w/index.php(3): include(string)
#29 {main}
```