I applied update to my Piwik setup, but now after login, it gives immediatly a 500 error.
Added a screenshot of the data returned.
Could someone explain me why update 3.0 to 3.1 broke my setup ?
Can you have a look at your error log? As it returns a 500, there should be an error in the logs...
Seems the permissions on the cache folder (tmp) was incorrect after update.
Thanks for responding @sgiehl