No widgets after upgrade to 3.0


after upgrade to 3.0 piwik doesn’t show any widgets in the browser. I can only see the black header and the sidebar if a click on settings.
There is noch problem with the piwik app.

Any ideas?

Hi, maybe try Piwik reporting UI doesn't have any css style or, the menu text appears on a white background, or I get JavaScript errors in the Piwik UI. How to fix this display problem? - Analytics Platform - Piwik