Travis: Initiating build for commit '4fedce6257ea721c880c198696536d3bf39e1fbf' on branch 'master': Fix .PHP Fatal error:  Call to a member function getStylesheet() on a non-object in /home/travis/build/piwik/piwik/core/AssetManager/UIAssetFetcher/StylesheetUIAssetFetcher.php on line 59
https://travis-ci.org/piwik/piwik/jobs/26917086