MediaWiki API result

This is the HTML representation of the JSON format. HTML is good for debugging, but is unsuitable for application use. Specify the <var>format</var> parameter to change the output format. To see the non-HTML representation of the JSON format, set [https://lctd.info/api.php?action=query&prop=duplicatefiles&titles=File%3AAlbert_Einstein_Head.jpg&format=json <kbd>format=json</kbd>]. See the [[mw:API|complete documentation]], or the [[Special:ApiHelp/main|API help]] for more information.
{
    "batchcomplete": "",
    "query": {
        "normalized": [
            {
                "from": "File:Albert_Einstein_Head.jpg",
                "to": "File:Albert Einstein Head.jpg"
            }
        ],
        "pages": {
            "-1": {
                "ns": 6,
                "title": "File:Albert Einstein Head.jpg",
                "missing": ""
            }
        }
    }
}{
    "error": {
        "code": "internal_api_error_DBTransactionStateError",
        "info": "[aa61a714b6ccda10678c4023] Exception caught: A database query error has occurred. This may indicate a bug in the software.",
        "errorclass": "Wikimedia\\Rdbms\\DBTransactionStateError",
        "*": "Wikimedia\\Rdbms\\DBTransactionStateError at /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/TransactionManager.php(207)\nfrom /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/TransactionManager.php(207)\n#0 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/Database.php(1022): Wikimedia\\Rdbms\\TransactionManager->assertTransactionStatus()\n#1 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/Database.php(667): Wikimedia\\Rdbms\\Database->assertQueryIsCurrentlyAllowed()\n#2 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/Database.php(1383): Wikimedia\\Rdbms\\Database->query()\n#3 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/Database.php(1392): Wikimedia\\Rdbms\\Database->select()\n#4 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/DBConnRef.php(119): Wikimedia\\Rdbms\\Database->selectRow()\n#5 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/database/DBConnRef.php(369): Wikimedia\\Rdbms\\DBConnRef->__call()\n#6 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/rdbms/querybuilder/SelectQueryBuilder.php(755): Wikimedia\\Rdbms\\DBConnRef->selectRow()\n#7 /opt/bitnami/apache/htdocs/lctdwiki/includes/interwiki/ClassicInterwikiLookup.php(225): Wikimedia\\Rdbms\\SelectQueryBuilder->fetchRow()\n#8 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/objectcache/wancache/WANObjectCache.php(1725): MediaWiki\\Interwiki\\ClassicInterwikiLookup->{closure:MediaWiki\\Interwiki\\ClassicInterwikiLookup::load():219}()\n#9 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/objectcache/wancache/WANObjectCache.php(1556): WANObjectCache->fetchOrRegenerate()\n#10 /opt/bitnami/apache/htdocs/lctdwiki/includes/interwiki/ClassicInterwikiLookup.php(216): WANObjectCache->getWithSetCallback()\n#11 /opt/bitnami/apache/htdocs/lctdwiki/includes/interwiki/ClassicInterwikiLookup.php(142): MediaWiki\\Interwiki\\ClassicInterwikiLookup->load()\n#12 /opt/bitnami/apache/htdocs/lctdwiki/includes/libs/MapCacheLRU.php(271): MediaWiki\\Interwiki\\ClassicInterwikiLookup->{closure:MediaWiki\\Interwiki\\ClassicInterwikiLookup::fetch():141}()\n#13 /opt/bitnami/apache/htdocs/lctdwiki/includes/interwiki/ClassicInterwikiLookup.php(139): MapCacheLRU->getWithSetCallback()\n#14 /opt/bitnami/apache/htdocs/lctdwiki/includes/interwiki/ClassicInterwikiLookup.php(123): MediaWiki\\Interwiki\\ClassicInterwikiLookup->fetch()\n#15 /opt/bitnami/apache/htdocs/lctdwiki/includes/title/MediaWikiTitleCodec.php(444): MediaWiki\\Interwiki\\ClassicInterwikiLookup->isValidInterwiki()\n#16 /opt/bitnami/apache/htdocs/lctdwiki/includes/title/Title.php(2756): MediaWiki\\Title\\MediaWikiTitleCodec->splitTitleString()\n#17 /opt/bitnami/apache/htdocs/lctdwiki/includes/title/Title.php(462): MediaWiki\\Title\\Title->secureAndSplit()\n#18 /opt/bitnami/apache/htdocs/lctdwiki/includes/title/Title.php(410): MediaWiki\\Title\\Title::newFromTextThrow()\n#19 /opt/bitnami/apache/htdocs/lctdwiki/includes/parser/Parser.php(2540): MediaWiki\\Title\\Title::newFromText()\n#20 /opt/bitnami/apache/htdocs/lctdwiki/includes/parser/Parser.php(2394): Parser->handleInternalLinks2()\n#21 /opt/bitnami/apache/htdocs/lctdwiki/includes/parser/Parser.php(1572): Parser->handleInternalLinks()\n#22 /opt/bitnami/apache/htdocs/lctdwiki/includes/parser/Parser.php(651): Parser->internalParse()\n#23 /opt/bitnami/apache/htdocs/lctdwiki/includes/language/MessageCache.php(1505): Parser->parse()\n#24 /opt/bitnami/apache/htdocs/lctdwiki/includes/language/Message.php(1431): MessageCache->parse()\n#25 /opt/bitnami/apache/htdocs/lctdwiki/includes/language/Message.php(1009): Message->parseText()\n#26 /opt/bitnami/apache/htdocs/lctdwiki/includes/language/Message.php(1083): Message->format()\n#27 /opt/bitnami/apache/htdocs/lctdwiki/includes/api/ApiFormatBase.php(292): Message->parseAsBlock()\n#28 /opt/bitnami/apache/htdocs/lctdwiki/includes/api/ApiMain.php(2200): ApiFormatBase->closePrinter()\n#29 /opt/bitnami/apache/htdocs/lctdwiki/includes/api/ApiMain.php(1943): ApiMain->printResult()\n#30 /opt/bitnami/apache/htdocs/lctdwiki/includes/api/ApiMain.php(912): ApiMain->executeAction()\n#31 /opt/bitnami/apache/htdocs/lctdwiki/includes/api/ApiMain.php(883): ApiMain->executeActionWithErrorHandling()\n#32 /opt/bitnami/apache/htdocs/lctdwiki/api.php(95): ApiMain->execute()\n#33 /opt/bitnami/apache/htdocs/lctdwiki/api.php(48): wfApiMain()\n#34 {main}"
    }
}
Retrieved from "$'"1"