Answers for "cannot modify header information - headers already sent by (output started at in php"

Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\heermatka\myprofile.php:48) in C:\xampp\htdocs\heermatka\myprofile.php on line 144

ob_start();
Please paste top on the page.

Warning: Cannot modify header information - headers already sent by

In WordPress, check for a PHP version update, if you are losing the latest PHP version, revert back to an old PHP version, upgrade you WordPress version to the latest, then update again to the latest PHP verion.