It works good in Wappler design view.
But the navbar doesn’t show up in Explorer when I look at it lokaly.
Have you published the page? If you are not using a remote host yet change the target to local.
Yes, the SSI files are handled by your server. You cannot see them on the page by just running an HTML file from a random folder on your computer.
You can install some local server to test such things.
I installed a server and even there the Navbar doesn’t show up.
Your server needs to have the module for serverside includes enabled. Please check this topic: SSI File vs PHP Includes
I read all directives in this article
https://www.yourhtmlsource.com/sitemanagement/includes.html
and I made the necessary adjustments in the names off the files:
Navbar.html becomes Navbar.ssi, index.html becomes index.shtml with the reference: include file="Navbar.ssi
After uploading I still get the message:
[an error occurred while processing this directive]
@vdweyer you should not alter the include files, leave them as wappler created them … just follow the tutorial explaining how to use ssi.