Ashx route not working - Piranha CMS - Failed to load resource

Question

I'm facing this issue, but I don't know why. How do I fix this?

Failed to load resource: the server responded with a status of 404 (Not Found) 
    http://www.xxx/res.ashx/areas/manager/content/css/style.min.css
Failed to load resource: the server responded with a status of 404 (Not Found)  
    http://www.xxx/res.ashx/areas/manager/content/js/ext/jquery-1.7.2.min.js
Failed to load resource: the server responded with a status of 404 (Not Found) 
     http://www.xxx/res.ashx/areas/manager/content/js/jquery.manager.js

Installed Piranha: https://github.com/nickvee/Piranha.Bootstrap/tree/master/Piranha.Bootstrap on the server

Original location is: http://www.xxx/content/css/style.min.css

Answer 1

The repository you've installed hasn't been updated for 7 months and uses a rather old version of Piranha CMS (2.0.3). If you need support for it you'll have to ask the author of the Piranha.Bootstrap repository at GitHub, preferably by adding a new issue here.

Answer 2

I got the same error when deploying to a server. It's because *.ashx is not handled by any program.

Try to configure Handler Mapping like this: