if the url of wordpress isn't set in the url of any piwik website. Several errors are produced:
- if the checkbox for "insert tracking code" in WP-Piwik Settings section Tracking is checked, after saving, this warning appears:
Warning: html_entity_decode() expects parameter 1 to be string, array given in /YYYYYY/ZZZZZZZ/wordpress/wp-content/plugins/wp-piwik/settings/tracking.php on line 19
- in the WP-Piwik dashboard inside almost every widget this warning appears
Piwik-Fehler: The parameter 'idSite=' is missing from the request.
- and of course the tracking code cannot be created ;)
It is configuration problem of Piwik. however it would be nice to get a helpful notice.