I'm trying to use Django's built-in template tag: https://docs.djangoproject.com/en/1.5/ref/templates/builtins/#ssi
It says:
Note that if you use {% ssi %}, you’ll need to define ALLOWED_INCLUDE_ROOTS in your Django settings, as a security measure.
Whenever I set ALLOWED_INCLUDE_ROOTS to anything in my settings.py, it causes every page on the website to produce a 500 error.
Any ideas?
Unfortunately the problem was just a mistake in the value I had for ALLOWED_INCLUDE_ROOTS.