Exporting To Facebook Issue

I've been trying to export a video to a Facebook page from Premier Pro. I log into Facebook from the PP export page, select the settings as advised and press export . It exports 100% then I get a publish error message stating that the export failed as I'm not logged into Facebook, but I have the option to manually upload. I've tried a couple more times and even had my Facebook account open but I'm still getting the same publish error message, even with my Facebook account page open.