A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: veso/dudoan_xoso_3mien_location.php

Line Number: 11

Backtrace:

File: /www/wwwroot/kqxs.live/libkqxs123/application/views/veso/dudoan_xoso_3mien_location.php
Line: 11
Function: _error_handler

File: /www/wwwroot/kqxs.live/libkqxs123/application/libraries/Template.php
Line: 315
Function: view

File: /www/wwwroot/kqxs.live/libkqxs123/application/controllers/frontend/Dudoan_xoso.php
Line: 378
Function: write_view

File: /www/wwwroot/kqxs.live/index.php
Line: 316
Function: require_once