MediaWiki internal error.

Original exception: exception 'DBQueryError' with message 'A database error has occurred
Query: SELECT * FROM `job` WHERE job_id >= 0 ORDER BY job_id LIMIT 1
Function: Job::pop
Error: 2006 MySQL server has gone away (localhost)
' in /var/www/html/venicewiki.org/includes/Database.php:824
Stack trace:
#0 /var/www/html/venicewiki.org/includes/Database.php(779): Database->reportQueryError('MySQL server ha...', 2006, ' SELECT * FRO...', 'Job::pop', false)
#1 /var/www/html/venicewiki.org/includes/Database.php(1224): Database->query(' SELECT * FRO...', 'Job::pop')
#2 /var/www/html/venicewiki.org/includes/Database.php(1243): Database->select('job', '*', 'job_id >= 0', 'Job::pop', Array)
#3 /var/www/html/venicewiki.org/includes/JobQueue.php(100): Database->selectRow('job', '*', 'job_id >= 0', 'Job::pop', Array)
#4 /var/www/html/venicewiki.org/includes/Wiki.php(343): Job::pop()
#5 /var/www/html/venicewiki.org/includes/Wiki.php(297): MediaWiki->doJobs()
#6 /var/www/html/venicewiki.org/index.php(90): MediaWiki->finalCleanup(Array, Object(LoadBalancer), Object(OutputPage))
#7 {main}

Exception caught inside exception handler: exception 'DBUnexpectedError' with message 'Error in fetchObject(): MySQL server has gone away (localhost)' in /var/www/html/venicewiki.org/includes/Database.php:953
Stack trace:
#0 /var/www/html/venicewiki.org/includes/Database.php(2339): Database->fetchObject(false)
#1 /var/www/html/venicewiki.org/includes/LinkBatch.php(89): ResultWrapper->fetchObject()
#2 /var/www/html/venicewiki.org/includes/LinkBatch.php(68): LinkBatch->executeInto(Object(LinkCache))
#3 /var/www/html/venicewiki.org/includes/Skin.php(204): LinkBatch->execute()
#4 /var/www/html/venicewiki.org/includes/Skin.php(180): Skin->preloadExistence()
#5 /var/www/html/venicewiki.org/includes/SkinTemplate.php(101): Skin->initPage(Object(OutputPage))
#6 /var/www/html/venicewiki.org/skins/MonoBook.php(23): SkinTemplate->initPage(Object(OutputPage))
#7 /var/www/html/venicewiki.org/includes/SkinTemplate.php(150): SkinMonoBook->initPage(Object(OutputPage))
#8 /var/www/html/venicewiki.org/includes/OutputPage.php(696): SkinTemplate->outputPage(Object(OutputPage))
#9 /var/www/html/venicewiki.org/includes/Exception.php(86): OutputPage->output()
#10 /var/www/html/venicewiki.org/includes/Exception.php(111): MWException->reportHTML()
#11 /var/www/html/venicewiki.org/includes/Exception.php(191): MWException->report()
#12 /var/www/html/venicewiki.org/includes/Exception.php(225): wfReportException(Object(DBQueryError))
#13 [internal function]: wfExceptionHandler(Object(DBQueryError))
#14 {main}