I want to use clickheat plugin in my piwik. but when i visit its page, show this warning:
/var/www/piwik/plugins/ClickHeat/Controller.php(93): Warning -
dir(/var/www/piwik/tmp/cache/clickheat/logs/): failed to open dir: No
such file or directory - Piwik 2.14.3 - Please report this message in
the Piwik forums: http://forum.piwik.org (please do a search first as it
might have been reported already)
there was a problem during the request. Maybe the server had a
temporary issue, or maybe you requested a report with too much data.
Please try again. If this error occurs repeatedly please contact your Piwik administrator for assistance.
Please help me.