Re: Manage Enrol Plugins - Error - Blank

// Add settings link.
            if (!$version) {
                $settings = '';
            } else if ($url = $plugininfo->get_settings_url()) {
                $settings = html_writer::link($url, $strsettings);
            } else {
                $settings = '';
            }

I have traced the problem on the self enrolment settings link. The settings screen for self enrolment is available but $plugininfo->get_settings_url() returns null, thus the error message. 

I have reported as MDL-41897. Please vote if you encounter a similar problem.