I simply submitted my themantic child theme and am obtaining a strange error message each time i attempt to set up a wordpress plugin

Warning: Cannot modify header information - headers already sent by (output began at /home/content/29/7464729/html/wordpress-content/styles/coolness/functions.php:126) in /home/content/29/7464729/html/wordpress-includes/pluggable.php online 934

Does anybody understand what i ought to do relating to this?

Look at your code with following guide:-

  • Remove blank line prior to the opening php statement
  • Remove blank lines following the closing php statement
  • Remove irrelevant echo's inside your code

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