What is an unexpected error occurred?
We generally get that error when there is a temporary glitch in the system. Refreshing the page usually solves the issue.
Why is my Facebook showing an unexpected error occurred?
What is this? An unexpected error occurred on Facebook because of a bug/glitch or you made too many login attempts. It can also happen because there is a Facebook outage (the servers are down). You can check if the app is down by searching for “Facebook” in DownDetector or using Twitter.