Better logging / compiler / webrick debug logging?

For development, I am using Ruby webrick to server web pages. I
recently wasted several hours trying to figure out why something kept
appearing wrong on the page.

I belatedly determined that, due to a typo, a .css file was not found
and loaded.

I cannot make webbrick's console debugging output say ``file not
found." I see it attempting to find the .css file (it can't) and it
happily keeps on going without so much as a wimper or sarcastic hmmph.

Isn't there something inside webbrick or another tool which attempts to
parse a page and run down all the errors or broken links? Something
like HTML tidy, however, which attempts to run down all the .css files,
icons, etc. etc., and point out when the file isn't found or the HTML
link is broken.

Ideas?

DON'T SAY A WORD!!!! :slight_smile:

(
I found the log entry which says:
ActionController::RoutingError (Recognition failed for "/stylesheet
..............
)