For any image request, it seems imageinfo is broken on master...
<?xml version="1.0"?>
<api servedby="ubuntu64-web-esxi">
<error code="internal_api_error_MWException" info="Exception Caught: Internal error in ApiResult::setElement: Bad parameter" xml:space="preserve">
#0 /var/www/wiki/mediawiki/core/includes/api/ApiBase.php(1420): wfDebugDieBacktrace('Internal error ...')
#1 /var/www/wiki/mediawiki/core/includes/api/ApiResult.php(144): ApiBase::dieDebug('ApiResult::setE...', 'Bad parameter')
#2 /var/www/wiki/mediawiki/core/includes/api/ApiResult.php(290): ApiResult::setElement('page', 'imagerepository', '', false)
#3 /var/www/wiki/mediawiki/core/includes/api/ApiQueryImageInfo.php(179): ApiResult->addValue(Array, 'imagerepository', '')
#4 /var/www/wiki/mediawiki/core/includes/api/ApiQuery.php(327): ApiQueryImageInfo->execute()
#5 /var/www/wiki/mediawiki/core/includes/api/ApiMain.php(820): ApiQuery->execute()
#6 /var/www/wiki/mediawiki/core/includes/api/ApiMain.php(372): ApiMain->executeAction()
#7 /var/www/wiki/mediawiki/core/includes/api/ApiMain.php(349): ApiMain->executeActionWithErrorHandling()
#8 /var/www/wiki/mediawiki/core/api.php(77): ApiMain->execute()
#9 {main}
</error>
</api>
Version: unspecified
Severity: major