Все термины и понятия

The DPL extension (version 1.8.9) produced a SQL statement which lead to a Database error.
The reason may be an internal error of DPL or an error which you made,
especially when using DPL options like titleregexp.
Query text is:
SELECT DISTINCT `page`.page_namespace as page_namespace,`page`.page_title as page_title,`page`.page_id as page_id, GROUP_CONCAT(DISTINCT cl_gc.cl_to ORDER BY cl_gc.cl_to ASC SEPARATOR ' | ') AS cats FROM `page` LEFT OUTER JOIN (`categorylinks` AS cl_gc) ON (page_id=cl_gc.cl_from) INNER JOIN `categorylinks` AS cl0 ON `page`.page_id=cl0.cl_from AND (cl0.cl_to LIKE '%термины_и_понятия') WHERE 1=1 AND (`page`.page_title LIKE '%') AND `page`.page_is_redirect=0 GROUP BY `page`.page_id ORDER BY page_title ASC LIMIT 0, 500

Error message is:
Got error 28 from storage engine (localhost)