Bug for PIWIK if Chat Plugin installed

We speak about Chat for PIWIK
http://plugins.piwik.org/Chat

  1. We installed Chat plugin from Piwik on one of our test web project

  2. now there is some problem with chat plugin
    Could you please to assist to fix problems (bug)

2.1) Text of message no 1. in PIWIK panel
WARNING: /var/www/analytics/core/Tracker/Settings.php(24): Notice - Undefined variable: isSameFingerprintsAcrossWebsites - Piwik 2.13.1

2.2) Text of message no 1. in PIWIK panel
WARNING: /var/www/analytics/core/Tracker/Settings.php(20): Warning - Missing argument 3 for Piwik\Tracker\Settings::__construct(), called in /var/www/analytics/plugins/Chat/Controller.php on line 135 and defined - Piwik 2.13.1

  1. Screenshots with the problems
    attached

If you have problem with the Chat plugin please report your bug in the issue tracker in the plugin tracker directly: Issues · VincentLahaye/piwik-chat · GitHub

  1. Thanks for the advice.

  2. Done
    Bug for PIWIK if Chat Plugin installed · Issue #20 · VincentLahaye/piwik-chat · GitHub

RGRDS
Vladimir

kindly pay your attention that the last reply from
“chat developer” was on 13 Aug 2014

pls., see

This is not good sign, from my point of view.

RGRS
Vladimir