on mlwiki:
/w/api.php?action=query&format=json&generator=prefixsearch&gpssearch=ra&gpsnamespace=0&gpslimit=15&prop=pageimages&piprop=thumbnail&pithumbsize=80&pilimit=15&redirects=&list=prefixsearch&pssearch=ra&pslimit=15 BadMethodCallException from line 266 of /srv/mediawiki/php-1.27.0-wmf.2/includes/PrefixSearch.php: Call to a member function getPrefixedText() on a non-object (NULL) {"exception_id":"d7701601"} [Exception BadMethodCallException] (/srv/mediawiki/php-1.27.0-wmf.2/includes/PrefixSearch.php:266) Call to a member function getPrefixedText() on a non-object (NULL) #0 /srv/mediawiki/php-1.27.0-wmf.2/includes/PrefixSearch.php(242): PrefixSearch->getRedirectTarget(Title) #1 /srv/mediawiki/php-1.27.0-wmf.2/includes/PrefixSearch.php(202): PrefixSearch->redirectTargetsToRedirect(array) #2 /srv/mediawiki/php-1.27.0-wmf.2/includes/PrefixSearch.php(164): PrefixSearch->handleResultFromHook(array, array, string, integer) #3 /srv/mediawiki/php-1.27.0-wmf.2/includes/PrefixSearch.php(70): PrefixSearch->searchBackend(array, string, integer, integer) #4 /srv/mediawiki/php-1.27.0-wmf.2/includes/PrefixSearch.php(98): PrefixSearch->search(string, integer, array, integer) #5 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiQueryPrefixSearch.php(49): PrefixSearch->searchWithVariants(string, integer, array, integer) #6 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiQueryPrefixSearch.php(35): ApiQueryPrefixSearch->run(ApiPageSet) #7 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiPageSet.php(173): ApiQueryPrefixSearch->executeGenerator(ApiPageSet) #8 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiPageSet.php(137): ApiPageSet->executeInternal(boolean) #9 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiQuery.php(271): ApiPageSet->execute() #10 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiMain.php(1270): ApiQuery->execute() #11 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiMain.php(466): ApiMain->executeAction() #12 /srv/mediawiki/php-1.27.0-wmf.2/includes/api/ApiMain.php(438): ApiMain->executeActionWithErrorHandling() #13 /srv/mediawiki/php-1.27.0-wmf.2/api.php(88): ApiMain->execute() #14 /srv/mediawiki/w/api.php(3): include(string)