Unexpected non-MediaWiki exception encountered, of type "mysqli_sql_exception"
mysqli_sql_exception: Out of memory; check if mysqld or some other process uses all available memory; if not, you may have to use 'ulimit' to allow mysqld to use more memory or you can add more swap space in /var/www/html/bcwiki/includes/db/DatabaseMysql.php:23
Stack trace:
#0 /var/www/html/bcwiki/includes/db/DatabaseMysql.php(23): mysqli_query(Object(mysqli), 'SELECT /* Revis...')
#1 /var/www/html/bcwiki/includes/db/Database.php(800): DatabaseMysql->doQuery('SELECT /* Revis...')
#2 /var/www/html/bcwiki/includes/db/Database.php(1290): DatabaseBase->query('SELECT rev_id,...', 'Revision::fetch...')
#3 /var/www/html/bcwiki/includes/Revision.php(259): DatabaseBase->select(Array, Array, Array, 'Revision::fetch...', Array)
#4 /var/www/html/bcwiki/includes/Revision.php(213): Revision::fetchFromConds(Object(DatabaseMysql), Array)
#5 /var/www/html/bcwiki/includes/Revision.php(196): Revision::loadFromConds(Object(DatabaseMysql), Array)
#6 /var/www/html/bcwiki/includes/Revision.php(85): Revision::newFromConds(Array)
#7 /var/www/html/bcwiki/includes/WikiPage.php(497): Revision::newFromPageId(1, 44437)
#8 /var/www/html/bcwiki/includes/WikiPage.php(516): WikiPage->loadLastEdit()
#9 /var/www/html/bcwiki/includes/Article.php(303): WikiPage->getRevision()
#10 /var/www/html/bcwiki/includes/Article.php(259): Article->fetchContent(0)
#11 /var/www/html/bcwiki/includes/Article.php(194): Article->loadContent()
#12 /var/www/html/bcwiki/includes/Article.php(476): Article->getContent()
#13 /var/www/html/bcwiki/includes/Wiki.php(484): Article->view()
#14 /var/www/html/bcwiki/includes/Wiki.php(255): MediaWiki->performAction(Object(Article))
#15 /var/www/html/bcwiki/includes/Wiki.php(640): MediaWiki->performRequest()
#16 /var/www/html/bcwiki/includes/Wiki.php(547): MediaWiki->main()
#17 /var/www/html/bcwiki/index.php(59): MediaWiki->run()
#18 {main}