An error of type E_ERROR

This plugin use in the wrong way a filter (it isn’t an hook)

add_action('dashboard_glance_items', [$this, 'actDashboardGlanceItems']);

At this function
https://plugins.trac.www.ads-software.com/browser/revisionary/trunk/admin/admin_rvy.php#L198 as this filter expect that you return the value passed, so this crashes all the plugins that instead need that value that is not returned.