Report and XML error

Summary

Report and Custom Script

Content

Hi community,

 I am trying to add the following under Custom Scripts - Initialisation tab

putenv('TEMPORARY_RNW_CONF_DIRECTORY');
require_once(get_cfg_var('doc_root').'/custom/test.php');

However, I am getting the below error

"Unexpected XML declaration. The XML declaration must be the first node in the document, and no white space characters are allowed to appear before it. Line 12, position 3."

I did create a new report and remove all code from my php file, but still the issue persists

Any suggestion to solve this issue would be much appreciated