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A PHP Error was encountered

Severity: Notice

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

Filename: jokes/joke-detail.php

Line Number: 189

Backtrace:

File: /home/majedarj/public_html/application/views/jokes/joke-detail.php
Line: 189
Function: _error_handler

File: /home/majedarj/public_html/application/controllers/Category.php
Line: 48
Function: view

File: /home/majedarj/public_html/index.php
Line: 317
Function: require_once