Cannot modify header information – headers already sent

Hello,

Firstly, thanks for the plugin, working great, until now…:).

I want to redirect a page to another page, using header(location, but get an error message:

Warning: Cannot modify header information – headers already sent by (output started at C:\xampp\htdocs-test\wp-includes\class.wp-styles.php:127) in C:\xampp\htdocs-test\wp-content\plugins\insert-php\insert_php.php(48) : eval()’d code on line 2

I checked link 127 in class.wpstyles.php (btw, the file was installed by wordpress, as part of the install). Line 127 is: echo $tag;

Any solutions for this?

Thanks,

Ray

https://wordpress.org/plugins/insert-php/