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/lib/pkp/classes/db/DAO.inc.php line 200
Function: DAO->retrieve("SELECT ps.*, s.*, COALESCE(stl.setting_value, stpl.setti...", Array(10), False)

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 388
Function: DAO->retrieveRange("SELECT ps.*, s.*, COALESCE(stl.setting_value, stpl.setti...", Array(10), Null)

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 352
Function: PublishedArticleDAO->getBySetting("pub-id::publisher-id", "1813", Null)

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 400
Function: PublishedArticleDAO->getPublishedArticleByPubId("publisher-id", "1813", Null, Null)

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 45
Function: PublishedArticleDAO->getPublishedArticleByBestArticleId(Null, "1813", Null)

File: /var/www/html/ejournal/lib/pkp/classes/cache/GenericCache.inc.php line 63
Function: PublishedArticleDAO->_articleCacheMiss(Object(GenericCache), "1813")

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 345
Function: GenericCache->get("1813")

File: /var/www/html/ejournal/classes/article/PublishedArticleDAO.inc.php line 400
Function: PublishedArticleDAO->getPublishedArticleByPubId("publisher-id", "1813", "4", True)

File: /var/www/html/ejournal/plugins/generic/citationStyleLanguage/pages/CitationStyleLanguageHandler.inc.php line 101
Function: PublishedArticleDAO->getPublishedArticleByBestArticleId("4", "1813", True)

File: /var/www/html/ejournal/plugins/generic/citationStyleLanguage/pages/CitationStyleLanguageHandler.inc.php line 36
Function: CitationStyleLanguageHandler->_setupRequest(Array(1), Object(Request))

File: /var/www/html/ejournal/lib/pkp/classes/core/PKPRouter.inc.php line 390
Function: CitationStyleLanguageHandler->get(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()