Warning : strpos(): Empty delimiter

Same problem here running XAMPP. It appears as if there’s a problem because the “domain” of “localhost” causes problems with detecting the domain extension, as there is none. I’m reluctant to mod the plugin code, but it would be nice to have a fix in place to allow for extension-less domains and this plugin.

Created an issue on GitHub for it: https://github.com/Yoast/google-analytics-for-wordpress/issues/83

Resolved with version 5.0.6