MediaWiki internal error.

Original exception: exception 'DBQueryError' with message 'A database error has occurred
Query: SELECT * FROM `mw_site_stats` LIMIT 1
Function: SiteStatsUpdate::doUpdate
Error: 2006 MySQL server has gone away (mediawiki41.randonneur-club-marcquois.org)
' in /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Database.php:824
Stack trace:
#0 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Database.php(779): Database->reportQueryError('MySQL server ha...', 2006, ' SELECT * FRO...', 'SiteStatsUpdate...', false)
#1 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Database.php(1224): Database->query(' SELECT * FRO...', 'SiteStatsUpdate...')
#2 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Database.php(1243): Database->select('site_stats', '*', false, 'SiteStatsUpdate...', Array)
#3 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/SiteStats.php(189): Database->selectRow('site_stats', '*', false, 'SiteStatsUpdate...')
#4 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Wiki.php(314): SiteStatsUpdate->doUpdate()
#5 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Wiki.php(296): MediaWiki->doUpdates(Array)
#6 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/index.php(90): MediaWiki->finalCleanup(Array, Object(LoadBalancer), Object(OutputPage))
#7 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/index.php5(1): require('/flex/storage/r...')
#8 {main}

Exception caught inside exception handler: exception 'DBUnexpectedError' with message 'Error in fetchObject(): MySQL server has gone away (mediawiki41.randonneur-club-marcquois.org)' in /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Database.php:953
Stack trace:
#0 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Database.php(2339): Database->fetchObject(false)
#1 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/LinkBatch.php(89): ResultWrapper->fetchObject()
#2 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/LinkBatch.php(68): LinkBatch->executeInto(Object(LinkCache))
#3 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Skin.php(204): LinkBatch->execute()
#4 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Skin.php(180): Skin->preloadExistence()
#5 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/SkinTemplate.php(101): Skin->initPage(Object(OutputPage))
#6 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/skins/GuMax.php(45): SkinTemplate->initPage(Object(OutputPage))
#7 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/SkinTemplate.php(150): SkinGuMax->initPage(Object(OutputPage))
#8 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/OutputPage.php(696): SkinTemplate->outputPage(Object(OutputPage))
#9 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Exception.php(86): OutputPage->output()
#10 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Exception.php(111): MWException->reportHTML()
#11 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Exception.php(191): MWException->report()
#12 /flex/storage/randonneur-club-marcquois.org/site/www/mediawiki/includes/Exception.php(225): wfReportException(Object(DBQueryError))
#13 [internal function]: wfExceptionHandler(Object(DBQueryError))
#14 {main}