Warning Message: /plugins/Referrers/Controller.php(422): Warning

@ossipetz wrote:

Hallo

Piwik today showed a message and told me to report it in the forums Image may be NSFW.
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The message was:

WARNING: /home/piwik/htdocs/plugins/Referrers/Controller.php(422): Warning - Invalid argument supplied for foreach() - Piwik 3.0.0 - Please report this message in the Piwik forums: http://forum.piwik.org (please do a search first as it might have been reported already)

I haven't found a stacktrace or something in the logs. Also everything seems to work normally (except some access peaks that may have caused this).

Thanks Image may be NSFW.
Clik here to view.

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