Following is a best way to fix

"Warning: Cannot modify header information - headers already sent by (output started at /home/user/public_html/index.php:581) in /home/user/public_html/system/sessions.php on line 180"

Step-1: Login to Cpanel

Output should be:

Step-2: Click on MultiPHP INI Editor

Find out there "MultiPHP INI Editor" on "Software"

Output should be:

Step-3: Finally Copy and Paste Following Code

Now, Click on "Editor Mode" from right side.

Then, Copy Following Code Line and Paste.

Finally, "Save"

Done...

output_buffering = 4096

Output should be:

How to fix Header headers already sent by

MultiPHP INI Editor Tutorial

Read Full:	MultiPHP INI Editor Tutorial
Category:	Web Tutorial
Sub Category:	MultiPHP INI Editor Tutorial
Uploaded:	3 months ago
Uploaded by:	Admin
Views:	9
Tested on:	PHP 7.4

Step-1: Login to Cpanel

Output should be:

Step-2: Click on MultiPHP INI Editor

Output should be:

Step-3: Finally Copy and Paste Following Code

Output should be:

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