Mathematics: World History 2

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home3/allentea/public_html/interactive/application/models/Content_model.php:269)

Filename: core/Common.php

Line Number: 570

Backtrace:

An uncaught Exception was encountered

Type: TypeError

Message: count(): Argument #1 ($value) must be of type Countable|array, bool given

Filename: /home3/allentea/public_html/interactive/application/views/level_view.php

Line Number: 64

Backtrace:

File: /home3/allentea/public_html/interactive/application/controllers/History.php
Line: 22
Function: view

File: /home3/allentea/public_html/interactive/index.php
Line: 315
Function: require_once