<?xml version="1.0"?>
<api>
  <error code="internal_api_error_DBQueryError" info="Database query error" xml:space="preserve">

#0 /var/www/html/wiki/includes/db/Database.php(1039): DatabaseBase->reportQueryError('Unknown storage...', 1286, 'SELECT  vt_tag ...', 'ChangeTags::lis...', false)
#1 /var/www/html/wiki/includes/db/Database.php(1496): DatabaseBase->query('SELECT  vt_tag ...', 'ChangeTags::lis...')
#2 /var/www/html/wiki/includes/ChangeTags.php(271): DatabaseBase->select('valid_tag', 'vt_tag', Array, 'ChangeTags::lis...')
#3 /var/www/html/wiki/includes/api/ApiFeedContributions.php(171): ChangeTags::listDefinedTags()
#4 /var/www/html/wiki/includes/api/ApiBase.php(556): ApiFeedContributions->getAllowedParams(0)
#5 /var/www/html/wiki/includes/api/ApiBase.php(652): ApiBase->getFinalParams()
#6 /var/www/html/wiki/includes/api/ApiMain.php(710): ApiBase->extractRequestParams()
#7 /var/www/html/wiki/includes/api/ApiMain.php(814): ApiMain->setupModule()
#8 /var/www/html/wiki/includes/api/ApiMain.php(380): ApiMain->executeAction()
#9 /var/www/html/wiki/includes/api/ApiMain.php(351): ApiMain->executeActionWithErrorHandling()
#10 /var/www/html/wiki/api.php(73): ApiMain->execute()
#11 {main}

</error>
</api>