XML declaration allowed only at the start of the document

Question

My blog feed show error today:

This page contains the following errors:

error on line 2 at column 6: XML declaration allowed only at the s

Answer 1

Here is the solution I found First you create a php file (whitespacefix.php) on the wordpress root dictory with following content.

Then open the index.php file and add the following line right after tag

include('whitespacefix.php');

Referenced from here