Piwik 2.9.0 is a new major release of Piwik! In this release we have focused on reliability and stability. 58 tickets have been closed by more than 8 contributors!
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Piwik got an update to version 2.3.0. The update runs smooth as general but one Error appears after the update.
Failed to load HTML file: Please check your server configuration. You may want to whitelist "*.html" files from the "plugins" directory. The HTTP status code is 403 for URL "plugins/ZenMode/angularjs/quick-access/quick-access.html"
It is a solvable one :-). Login to your webroot for your piwik installation and list the content of your "plugins" directory. As you will notice, the rights for the directory "ZenMode" (750) differs from the rest (755). Adapt the rights and the error is gone.