Exception: invalid data source name
#0 /home/aibdh80ehx97/public_html/application/core/DB.php(61): PDO->__construct('', NULL, NULL, Array)
#1 /home/aibdh80ehx97/public_html/application/core/DB.php(101): DB->__construct(false)
#2 /home/aibdh80ehx97/public_html/application/core/AModel.php(60): DB::getInstance()
#3 /home/aibdh80ehx97/public_html/index.php(31): AModel->__construct()
#4 {main}