Django + Heroku - Debug = False issues

Question

I've been working on a website for a while now (Django/Python on Heroku). I usually have debug = true while developing, but now when I set to false I get 'application errors' from Heroku. My logs inform me that the issue is a "Request Interrupted" (H18, sock=backend).

I understand that this means that I have an error somewhere in my code, but for the life of me I cannot figure out where.

I'm also having a hard time finding an efficient debugging work-flow when Debug=False. I have logentries and NewRelic for error monitoring on the Heroku app, but NewRelic reports 0 errors while logentries only gives me the default heroku-app error logs.

I cannot possibly show you all my code (also I won't), so I realize that it'll be difficult for anyone to pinpoint my exact problem - therefore I am more asking in general terms.

I know that all URLs need to end with a slash, and that the ALLOWED_HOSTS setting is required - but what else can result in these errors when debug = false ?

Oh please note that EVERYTHING works as intended when debug is true.

I'm running Django version 1.7 with Python version 2.7.6.

These are the 3rd party apps that I use:

• Grappelli (loaded before default Django apps)
• gunicorn
• storages
• compressor
• collectfast
• haystack
• bootstrap3
• robots
• sorl.thumbnail
• django_countries
• django_wysiwyg
• validatedfile
• colorfield
• cookielaw

Answer 1

So I apparently discovered the culprit. I was also using django-htmlmin , and for whatever weird reason that apparently caused my issues. I removed it and everything worked fine regardless of the debug setting. Yay!

I don't have the insight to say why django-htmlmin was causing these issues, although I suspect it might be incompatible with Django 1.7 or Django-Compresser.