<?xml version="1.0"?>
<api>
  <error code="internal_api_error_MWException" info="Exception Caught: Internal error in ApiFormatXml::recXmlPrint: (getContentNamespaces, ...) has integer keys without _element value. Use ApiResult::setIndexedTagName()." xml:space="preserve">

#0 /var/www/includes/api/ApiFormatXml.php(171): ApiBase::dieDebug('ApiFormatXml::r...', '(getContentName...')
#1 /var/www/includes/api/ApiFormatXml.php(186): ApiFormatXml::recXmlPrint('getContentNames...', Array, 0)
#2 /var/www/includes/api/ApiFormatXml.php(73): ApiFormatXml::recXmlPrint('api', Array, -2)
#3 /var/www/includes/api/ApiMain.php(1062): ApiFormatXml->execute()
#4 /var/www/includes/api/ApiMain.php(924): ApiMain->printResult(false)
#5 /var/www/includes/api/ApiMain.php(363): ApiMain->executeAction()
#6 /var/www/includes/api/ApiMain.php(334): ApiMain->executeActionWithErrorHandling()
#7 /var/www/api.php(85): ApiMain->execute()
#8 {main}

</error>
</api>