Item not found exception from Special:EnitityData should not be logged.
Example:
https://www.wikidata.org/wiki/Special:EntityData/Q6069113.json
No entity with ID Q16537768 was found.
```
#0 /srv/mediawiki/php-1.25wmf9/extensions/Wikidata/extensions/Wikibase/repo/includes/LinkedData/EntityDataRequestHandler.php(372): Wikibase\Repo\LinkedData\EntityDataRequestHandler->getEntityRevision()
#1 /srv/mediawiki/php-1.25wmf9/extensions/Wikidata/extensions/Wikibase/repo/includes/LinkedData/EntityDataRequestHandler.php(226): Wikibase\Repo\LinkedData\EntityDataRequestHandler->showData()
#2 /srv/mediawiki/php-1.25wmf9/extensions/Wikidata/extensions/Wikibase/repo/includes/specials/SpecialEntityData.php(154): Wikibase\Repo\LinkedData\EntityDataRequestHandler->handleRequest()
#3 /srv/mediawiki/php-1.25wmf9/includes/specialpage/SpecialPage.php(363): Wikibase\Repo\Specials\SpecialEntityData->execute()
#4 /srv/mediawiki/php-1.25wmf9/includes/specialpage/SpecialPageFactory.php(589): SpecialPage->run()
#5 /srv/mediawiki/php-1.25wmf9/includes/MediaWiki.php(275): SpecialPageFactory::executePath()
#6 /srv/mediawiki/php-1.25wmf9/includes/MediaWiki.php(584): MediaWiki->performRequest()
#7 /srv/mediawiki/php-1.25wmf9/includes/MediaWiki.php(435): MediaWiki->main()
#8 /srv/mediawiki/php-1.25wmf9/index.php(46): MediaWiki->run()
#9 /srv/mediawiki/w/index.php(3): include()
#10 {main}
```