DB Error: Disk full (/tmp/#sql_5cd_0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")

Stack Trace:

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 202
Function: DAO->retrieve("SELECT DISTINCT ps.*, s.*, se.abstracts_not_required...", Array(9))

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 69
Function: PublishedArticleDAO->getPublishedArticlesInSections("226", Null)

File: /var/www/html/ejournal/lib/pkp/classes/cache/GenericCache.inc.php line 63
Function: PublishedArticleDAO->_articlesInSectionsCacheMiss(Object(GenericCache), "226")

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 179
Function: GenericCache->get("226")

File: /var/www/html/ejournal/pages/issue/IssueHandler.inc.php line 312
Function: PublishedArticleDAO->getPublishedArticlesInSections("226", True)

File: /var/www/html/ejournal/pages/issue/IssueHandler.inc.php line 104
Function: IssueHandler::_setupIssueTemplate(Object(Request), Object(Issue), False)

File: /var/www/html/ejournal/lib/pkp/classes/core/PKPRouter.inc.php line 390
Function: IssueHandler->view(Array(1), Object(Request))

File: /var/www/html/ejournal/lib/pkp/classes/core/PKPPageRouter.inc.php line 231
Function: PKPRouter->_authorizeInitializeAndCallRequest(Array(2), Object(Request), Array(1), False)

File: /var/www/html/ejournal/lib/pkp/classes/core/Dispatcher.inc.php line 134
Function: PKPPageRouter->route(Object(Request))

File: /var/www/html/ejournal/lib/pkp/classes/core/PKPApplication.inc.php line 252
Function: Dispatcher->dispatch(Object(Request))

File: /var/www/html/ejournal/index.php line 68
Function: PKPApplication->execute()