An uncaught Exception was encountered

Type: TypeError

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

Filename: /var/www/html/nada5/application/controllers/Study.php

Line Number: 653

Backtrace:

File: /var/www/html/nada5/application/controllers/Study.php
Line: 744
Function: get_survey_info

File: /var/www/html/nada5/index.php
Line: 343
Function: require_once