Thread:Extension talk:Wikibase Repository/Obnoxious PHP error

When trying to install Wikibase, I get the following PHP error after adding the require_once to LocalSettings.php:

 PHP Fatal error: Class 'Wikibase\TemplateRegistry' not found in /home2/georgfd9/public_html/wikibase/extensions/Wikibase/lib/WikibaseLib.php on line 95

I get this on any wiki I try to install Wikibase on. I'm not using composer to install since I can't use composer on my server (and of course there no installation instructions for Wikibase without composer). Any help would be appreciated.