A PHP Error was encountered

Severity: Notice

Message: Undefined index: book

Filename: controllers/Study.php

Line Number: 3181

Backtrace:

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

Filename: controllers/Study.php

Line Number: 3181

Backtrace:

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

Filename: models/Study_model.php

Line Number: 462

Backtrace:

File: /var/www/html/public_html/application/models/Study_model.php
Line: 462
Function: _error_handler

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3207
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: q_type

Filename: controllers/Study.php

Line Number: 3234

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3234
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: q_type

Filename: controllers/Study.php

Line Number: 3234

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3234
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: q_type

Filename: controllers/Study.php

Line Number: 3272

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3272
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: q_type

Filename: controllers/Study.php

Line Number: 3310

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3310
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: q_type

Filename: controllers/Study.php

Line Number: 3310

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3310
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: q_type

Filename: controllers/Study.php

Line Number: 3316

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3316
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: q_type

Filename: controllers/Study.php

Line Number: 3316

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3316
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: q_type

Filename: controllers/Study.php

Line Number: 3323

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3323
Function: _error_handler

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

A PHP Error was encountered

Severity: Warning

Message: file_put_contents(tracking/missing_questions.log): failed to open stream: Permission denied

Filename: controllers/Study.php

Line Number: 3433

Backtrace:

File: /var/www/html/public_html/application/controllers/Study.php
Line: 3433
Function: file_put_contents

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: 3444
Function: redirect

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