A PHP Error was encountered

Severity: Notice

Message: Undefined variable: username

Filename: controllers/MainpageController.php

Line Number: 239

Backtrace:

File: /opt/lampp/htdocs/application/controllers/MainpageController.php
Line: 239
Function: _error_handler

File: /opt/lampp/htdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: password

Filename: controllers/MainpageController.php

Line Number: 239

Backtrace:

File: /opt/lampp/htdocs/application/controllers/MainpageController.php
Line: 239
Function: _error_handler

File: /opt/lampp/htdocs/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: mysqli::__construct(): (HY000/1045): Access denied for user ''@'server' (using password: NO)

Filename: controllers/MainpageController.php

Line Number: 239

Backtrace:

File: /opt/lampp/htdocs/application/controllers/MainpageController.php
Line: 239
Function: __construct

File: /opt/lampp/htdocs/index.php
Line: 315
Function: require_once

Connection failed: Access denied for user ''@'server' (using password: NO)