A PHP Error was encountered

Severity: Warning

Message: Undefined array key "grade_id"

Filename: controllers/OnlineLessons.php

Line Number: 17

Backtrace:

File: /home/u198207977/domains/nasr.school/public_html/platform/application/controllers/OnlineLessons.php
Line: 17
Function: _error_handler

File: /home/u198207977/domains/nasr.school/public_html/platform/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Undefined array key "subject_id"

Filename: controllers/OnlineLessons.php

Line Number: 18

Backtrace:

File: /home/u198207977/domains/nasr.school/public_html/platform/application/controllers/OnlineLessons.php
Line: 18
Function: _error_handler

File: /home/u198207977/domains/nasr.school/public_html/platform/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: foreach() argument must be of type array|object, null given

Filename: core/MY_Model.php

Line Number: 22

Backtrace:

File: /home/u198207977/domains/nasr.school/public_html/platform/application/core/MY_Model.php
Line: 22
Function: _error_handler

File: /home/u198207977/domains/nasr.school/public_html/platform/application/core/MY_Model.php
Line: 83
Function: populate

File: /home/u198207977/domains/nasr.school/public_html/platform/application/controllers/OnlineLessons.php
Line: 21
Function: load

File: /home/u198207977/domains/nasr.school/public_html/platform/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: foreach() argument must be of type array|object, null given

Filename: core/MY_Model.php

Line Number: 22

Backtrace:

File: /home/u198207977/domains/nasr.school/public_html/platform/application/core/MY_Model.php
Line: 22
Function: _error_handler

File: /home/u198207977/domains/nasr.school/public_html/platform/application/core/MY_Model.php
Line: 83
Function: populate

File: /home/u198207977/domains/nasr.school/public_html/platform/application/controllers/OnlineLessons.php
Line: 38
Function: load

File: /home/u198207977/domains/nasr.school/public_html/platform/index.php
Line: 315
Function: require_once