LotekHeavy

when I view the heatmap and click on the icon "showGroupLayout" , I got this error message displayed on my wiki site: ``` An error occurred Class 'Piwik_ClickHeat_Controller' not found...

I got the following warning message: ``` WARNING: /home/XXXX/piwik/plugins/ClickHeat/libs/classes/Heatmap.class.php(12): Deprecated - Methods with the same name as their class will not be constructors in a future version of PHP; Heatmap...