Cannot modify header information headers already sent by wordpress wp admin
Подробные видеоинструкции Wordpress на тему: "Cannot modify header information headers already sent by wordpress wp admin":

How to Fix Cannot Modify Header Information

Fix Cannot modify header information - headers already sent by output

How to solve Warning Cannot Modify Header Information – Header Already Sent By (100% Solved)

Исправляем ошибку headers already sent by
