A PHP Error was encountered

Severity: Warning

Message: mysqli::__construct(): (HY000/2002): No route to host

Filename: controllers/Front.php

Line Number: 277

Backtrace:

File: /var/www/html/application/controllers/Front.php
Line: 277
Function: __construct

File: /var/www/html/application/controllers/Front.php
Line: 305
Function: penelitian_jumlah_

File: /var/www/html/index.php
Line: 316
Function: require_once

Failed to connect to MySQL: No route to host