ssi an error occurred while processing this directive

Question

I get the following error in my shtml files

[an error occurred while processing this directive]

This error does not happen when including another file, it happens when I do if expressions like:

<!--#if expr="$QUERY_STRING = open-updates" --> open<!--#endif -->

I am running this dev environment on a windows machine using xampp

Answer 1

Turns out I had to put the following directive in my httpd.conf

SSILegacyExprParser on

The shtml files I am using came originally from a legacy apache server (1.X)