title: Where is the <head> code located in wordpress?
body: <p>I've been struggling with this thing for days.
  I have a custom theme on my WP site (including frameworks and fancy plugins). In my Chrome dev console I get an error because the index page tries to load a file from a host that doesn't exist. I located that code in the  section of the generated HTML, however I can't find the php file that generates the  so that I can remove the line.
  I hope that my question is clear enough. I'm a total beginner in coding.</p>
  
  <p>Thanks.</p>