So I'm getting a 403 error on my install after 2 days (or one?) after upgrade. I tried a few things, looked through error logs, access logs with no result. I installed a 3 days old backup of the same wiki on the same server under a different sub-domain, did the upgrade and it's working.
But yes, maybe it will fail in 1-2 days now.
Any idea where I could look at to figure out what is happening?
Thank you.
Fred