A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: controllers/IS_controller.php

Line Number: 480

Backtrace:

File: /home/reterm/public_html/application/controllers/IS_controller.php
Line: 480
Function: _error_handler

File: /home/reterm/public_html/index.php
Line: 292
Function: require_once

A PHP Error was encountered

Severity: Warning

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

Filename: core/Common.php

Line Number: 570

Backtrace:

File: /home/reterm/public_html/application/models/User_model.php
Line: 56
Function: query

File: /home/reterm/public_html/application/controllers/IS_controller.php
Line: 480
Function: getUserById

File: /home/reterm/public_html/index.php
Line: 292
Function: require_once

Database Error

A Database Error Occurred

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

select * from users where id =

Filename: models/User_model.php

Line Number: 56