ERROR: Connect Error (1040) Too many connections

6. [ERROR] rude\exception::error()         called at /var/www/medsites/shared/includes/rude-php/src/database/rude-database.php:35
5. [OK]    rude\database->__construct()    called at /var/www/medsites/linkxpress/includes/Helper/Rude.php:105
4. [OK]    Helper_Rude::connect_medsites() called at /var/www/medsites/shared/includes/rude-php/src/workspace/etc/rude-rude.php:9
3. [OK]    rude\rude::connect_medsites()   called at /var/www/medsites/shared/includes/frontend.php:385
2. [OK]    mosShowHead()                   called at /var/www/medsites/medicalimaging/templates/rhuk_solarflare_ii/index.php:29
1. [OK]    require_once()                  called at /var/www/medsites/medicalimaging/index.php:403