An unhandled error occured

The number of MySQL connections allowed cannot be restricted (mysql.max_links)

Stack trace
#0 /var/www/clients/client1/web10/web/developers/base/SMDataSource.classes.php(82): SMDataSource->getConnection('SMMenu')
#1 /var/www/clients/client1/web10/web/developers/extensions/SMMenu/SMMenu.classes.php(905): SMDataSource->__construct('SMMenu')
#2 /var/www/clients/client1/web10/web/developers/extensions/SMMenu/SMMenu.classes.php(879): SMMenuLoader::GetMenuItems()
#3 /var/www/clients/client1/web10/web/developers/extensions/SMMenu/Main.class.php(17): SMMenuManager->LoadPersistentMenuItems()
#4 /var/www/clients/client1/web10/web/developers/base/SMController.class.php(253): SMMenu->Init()
#5 /var/www/clients/client1/web10/web/developers/base/SMController.class.php(108): SMController->autoExecuteExtensions('Init')
#6 /var/www/clients/client1/web10/web/developers/index.php(22): SMController->Execute()
#7 {main}