Ecshop Vietnam Application Error

The application could not run because of the following error:

Message: Can't Connect MySQL Server(localhost)!

Ecshop Vietnam Application Error

The application could not run because of the following error:

Type: E_WARNING [2]

Message: mysqli_ping() expects parameter 1 to be mysqli, boolean given in /home/thanh/domains/tiktak.vn/public_html/includes/cls_mysql.php

Line: 237

Stack trace:

#0 [internal function]: ErrorHandler->handleError(2, 'mysqli_ping() e...', '/home/thanh/dom...', 237, Array)
#1 /home/thanh/domains/tiktak.vn/public_html/includes/cls_mysql.php(237): mysqli_ping(false)
#2 /home/thanh/domains/tiktak.vn/public_html/includes/cls_session.php(143): cls_mysql->query('INSERT INTO `th...')
#3 /home/thanh/domains/tiktak.vn/public_html/includes/cls_session.php(126): cls_session->insert_session()
#4 /home/thanh/domains/tiktak.vn/public_html/includes/cls_session.php(114): cls_session->gen_session_id()
#5 /home/thanh/domains/tiktak.vn/public_html/includes/init.php(258): cls_session->__construct(Object(cls_mysql), '`thanh_meta`.`e...', '`thanh_meta`.`e...')
#6 /home/thanh/domains/tiktak.vn/public_html/index.php(19): require_once('/home/thanh/dom...')
#7 {main}