I get this error regularly when I try to access bookmarks (mostly when I do this) on Facebook and it is fucking frustrating. The thing is, it only happens on my account. Eg. I get the error and then switch accounts and try to access the exact same bookmark in the same way from my brother's, girlfriend's, whoever's, and they get through fine but mine never redirects properly. I've also tried switching computers and reinstalling Firefox but I still have the same problem. It seems pretty random too - sometimes I get it sometimes I don't and I usually end up having to refresh the page until the fucker lets me in.
Just wondering if anyone knows anything about this because it is extremely frustrating and I don't want it happening on other pages too. AFAIK all the settings are the same and I haven't touched anything and cookies are allowed for Facebook.
The last picture (edit: which is actually the first picture displayed zomg reverse order) is a slightly different error message I got when trying to access it from a library at my uni. It says something about server configuration but wouldn't that also prevent others from accessing it (even though they can bceause I tested it)?