[PrestaShopDatabaseException]

Can't create/write to file '/tmp/#sql_38a_0.MYI' (Errcode: 28 - No space left on device)<br /><br /><pre> SELECT c.*, cl.`id_lang`, cl.`name`, cl.`description`, cl.`link_rewrite`, cl.`meta_title`, cl.`meta_keywords`, cl.`meta_description` FROM `ps_category` c INNER JOIN ps_category_shop category_shop ON (category_shop.id_category = c.id_category AND category_shop.id_shop = 1) LEFT JOIN `ps_category_lang` cl ON (c.`id_category` = cl.`id_category` AND `id_lang` = 2 AND cl.id_shop = 1 ) LEFT JOIN `ps_category_group` cg ON (cg.`id_category` = c.`id_category`) WHERE `id_parent` = 121 AND `active` = 1 AND cg.`id_group` =1 GROUP BY c.`id_category` ORDER BY `level_depth` ASC, category_shop.`position` ASC</pre>
at line 769 in file classes/db/Db.php

764.         if ($webservice_call && $errno) {
765.             $dbg = debug_backtrace();
766.             WebserviceRequest::getInstance()->setError(500, '[SQL Error] ' . $this->getMsgError() . '. From ' . (isset($dbg[3]['class']) ? $dbg[3]['class'] : '') . '->' . $dbg[3]['function'] . '() Query was : ' . $sql, 97);
767.         } elseif (_PS_DEBUG_SQL_ && $errno && !defined('PS_INSTALLATION_IN_PROGRESS')) {
768.             if ($sql) {
769.                 throw new PrestaShopDatabaseException($this->getMsgError() . '<br /><br /><pre>' . $sql . '</pre>');
770.             }
771. 
772.             throw new PrestaShopDatabaseException($this->getMsgError());
773.         }
774.     }