How do I increase Apache2's maximum URL length?

Quote:

Request-URI Too Long The requested URL's length exceeds the capacity limit for this server.

I've tried to follow a few guides like this: https://ubiq.co/tech-blog/increase-m...length-apache/

The problem is that my /etc/apache2/apache2.conf file doesn't even contain

Code:LimitRequestLinein it, and when I add it in, it doesn't appear to make a difference.

Any tips?

FYI. This is for my home server, nothing that the public will ever see or use.