I just ran the automatic upgrade to 3.1.0 and no errors were reported. However, navigating to Settings > Websites > Settings now immediately generates a 403 error. The URL requested is:
Similarly, Settings > Websites > Manage also fails to finish “Loading data…” as the background JSON call generates a 403 error. The URL which fails is a POST request to:
There’s nothing in the web server config which would account for the 403 errors and all other settings options work as expected, so I suspect the 403s are being generated internally by Piwik.
Any suggestions would be welcome!