I am trying to return a html template with BottlePy. And this works fine. But if I insert a javascript file like this in my tpl-file: <script type="text/javascript" src="js/main.js" charset="utf-8"></script> I get an 404 error. (Failed to load resource: the server responded with a status of 404 (Not Found)) Does anyone know how to fix this problem? Here is my script file: from bottle import route,