Did an automatic update to Piwik 3 - now I cannot access the dashboard anymore, I am getting the following error:
An exception has been thrown during the rendering of a template (".form-description is undefined: failed at
.form-description;line: 6259") in “@CoreUpdater/runUpdaterAndExit_welcome.twig” at line 8.
As downgrade to v2.7 by replacing the folder also failed (I guess as the database has already been updated?) I kindly ask for help - the sooner the better, as tracking is currently down :-/