Piwik Error, Unable to Start Session
TLDR: Fix the Piwik: Unable to Start SessionĀ error by running: sudo chmod 0777 /path/to/piwik/tmp/sessions Just documenting a solution for the “Unable to start session” error in Piwik 1.6. Basically, there’s a really common error where your perfectly fine Piwik install automagically makes itself fail to run after a week or two. The first error message …