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The “Cannot Modify Header Information – Headers Already Sent By” error indicates that a . php file cannot execute because an output is being sent before calling an HTTP header. Headers always need to precede the output.
The “Cannot Modify Header Information – Headers Already Sent By” error indicates that a . php file cannot execute because an output is being sent before calling an HTTP header. Headers always need to precede the output.
![Creación de categorías, páginas y publicaciones en el panel [cerrado]](https://usbforwindows.com/storage/img/images_1/creating_categories_pages_and_post_on_dashboard_closed.png)