Codeigniter: how to fix "Cannot modify header information - headers already sent by Filename: libraries/Session.php

[anharku]

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\xxx.php:522)

Filename: libraries/Session.php

Line Number: 675

How to fix this message?
i want make Avant bootstrap and join my codeigniter

[sumanta-ghosh]

@anharku this not an issue of codeigniter. If you add any space/line before php starting(

[narfbg]

This is a bug tracker, we don't provide general help here.
Please ask your questions on our forums instead.

[MarcioQuimbundo]

error_reporting(0) will not solve the problem, but it will clean the output error