Calls to Special:EntityData are failing when called with form id. See e.g. https://wikidata-lexeme.wmflabs.org/index.php/Special:EntityData/L15-F1.json
Backtrace:
[aa0d3c9dfcfa41317e67c2bb] /index.php/Special:EntityData/L15-F1.json Serializers\Exceptions\UnsupportedObjectException from line 46 of /var/www/html/extensions/WikibaseLexeme/vendor/serialization/serialization/src/Serializers/DispatchingSerializer.php: Backtrace: #0 /var/www/html/extensions/Wikibase/repo/includes/Api/ResultBuilder.php(340): Serializers\DispatchingSerializer->serialize(Wikibase\Lexeme\DataModel\Form) #1 /var/www/html/extensions/Wikibase/repo/includes/Api/ResultBuilder.php(305): Wikibase\Repo\Api\ResultBuilder->getEntityArray(Wikibase\Lexeme\DataModel\Form, string, NULL, array, array) #2 /var/www/html/extensions/Wikibase/repo/includes/LinkedData/EntityDataSerializationService.php(411): Wikibase\Repo\Api\ResultBuilder->addEntityRevision(NULL, Wikibase\Lib\Store\EntityRevision) #3 /var/www/html/extensions/Wikibase/repo/includes/LinkedData/EntityDataSerializationService.php(439): Wikibase\Repo\LinkedData\EntityDataSerializationService->generateApiResult(Wikibase\Lib\Store\EntityRevision, ApiFormatJson) #4 /var/www/html/extensions/Wikibase/repo/includes/LinkedData/EntityDataSerializationService.php(166): Wikibase\Repo\LinkedData\EntityDataSerializationService->getApiSerialization(Wikibase\Lib\Store\EntityRevision, ApiFormatJson) #5 /var/www/html/extensions/Wikibase/repo/includes/LinkedData/EntityDataRequestHandler.php(470): Wikibase\Repo\LinkedData\EntityDataSerializationService->getSerializedData(string, Wikibase\Lib\Store\EntityRevision, NULL, array, NULL) #6 /var/www/html/extensions/Wikibase/repo/includes/LinkedData/EntityDataRequestHandler.php(263): Wikibase\Repo\LinkedData\EntityDataRequestHandler->showData(WebRequest, OutputPage, string, Wikibase\Lexeme\DataModel\FormId, integer) #7 /var/www/html/extensions/Wikibase/repo/includes/Specials/SpecialEntityData.php(156): Wikibase\Repo\LinkedData\EntityDataRequestHandler->handleRequest(string, WebRequest, OutputPage) #8 /var/www/html/includes/specialpage/SpecialPage.php(522): Wikibase\Repo\Specials\SpecialEntityData->execute(string) #9 /var/www/html/includes/specialpage/SpecialPageFactory.php(569): SpecialPage->run(string) #10 /var/www/html/includes/MediaWiki.php(288): SpecialPageFactory::executePath(Title, RequestContext) #11 /var/www/html/includes/MediaWiki.php(863): MediaWiki->performRequest() #12 /var/www/html/includes/MediaWiki.php(524): MediaWiki->main() #13 /var/www/html/index.php(42): MediaWiki->run() #14 {main}