<ul><li>Fixed undefined variable <code>$domainsite_params</code> in <code>platform/components/toolbar.php</code> — was triggering a PHP notice on every page load, outputting the warning directly into the toolbar HTML</li><li>Added <code>$domainsite_params = $domainsite_params ?? null;</code> at top of file — matches the established pattern used across all other modules that reference this optional DB connection param</li></ul>