facebook is an invalid url?

[Emily Hall]

I was on facebook and i clicked on a picture and a pop-up came up and asked if I wanted to allow access or whatever to facebook or something like that, and i hit "Allow" but now, no matter what i do or how i type it, whenever i try going on Facebook i get this image that says invalid url. how do i fix this and make it go back to normal? Every other website is fine. .
also, i'm still able to go on facebook from my phone and google chrome. .

[igotaprank]

try this
Go to Settings > Safari > Clear history and Clear Cookies.