A PHP Error was encountered

Severity: Notice

Message: Undefined index: subject

Filename: controllers/Study.php

Line Number: 3155

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3155
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: subject

Filename: models/Study_model.php

Line Number: 457

Backtrace:

File: /var/www/html/public_html/application/models/Study_model.php
Line: 457
Function: _error_handler

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3181
Function: getStudyData

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: subject

Filename: models/Study_model.php

Line Number: 458

Backtrace:

File: /var/www/html/public_html/application/models/Study_model.php
Line: 458
Function: _error_handler

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3181
Function: getStudyData

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Study.php

Line Number: 3409

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3409
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: subject_id

Filename: controllers/Study.php

Line Number: 3415

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3415
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Study.php

Line Number: 3416

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3416
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Study.php

Line Number: 3417

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3417
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: class_id

Filename: controllers/Study.php

Line Number: 3418

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3418
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: description

Filename: controllers/Study.php

Line Number: 3418

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3418
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: book_title

Filename: controllers/Study.php

Line Number: 3418

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3418
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: chapter_title

Filename: controllers/Study.php

Line Number: 3418

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3418
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: question_type

Filename: controllers/Study.php

Line Number: 3418

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3418
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: question_topic

Filename: controllers/Study.php

Line Number: 3418

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3418
Function: _error_handler

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/public_html/system/core/Exceptions.php:271)

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3418
Function: redirect

File: /var/www/html/public_html/index.php
Line: 315
Function: require_once