A PHP Error was encountered

Severity: Warning

Message: Missing argument 1 for Blog::author_get()

Filename: controllers/Blog.php

Line Number: 159

Backtrace:

File: /var/www/html/books/application/controllers/Blog.php
Line: 159
Function: _error_handler

File: /var/www/html/books/application/libraries/REST_Controller.php
Line: 702
Function: call_user_func_array

File: /var/www/html/books/public/index.php
Line: 293
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: author_id

Filename: controllers/Blog.php

Line Number: 164

Backtrace:

File: /var/www/html/books/application/controllers/Blog.php
Line: 164
Function: _error_handler

File: /var/www/html/books/application/libraries/REST_Controller.php
Line: 702
Function: call_user_func_array

File: /var/www/html/books/public/index.php
Line: 293
Function: require_once