error on Facebook autoposting

Hi

I have setup the Facebook app and filled in the details as per your documentation. but when i try to login to facebook i just get the error:

No data received

ERR_EMPTY_RESPONSE

Unable to load the webpage because the server sent no data.

I have used EasyBlog for years now and never had this problem. I am not sure what it means.
i have started the submission for approval for Facebook but I think i need to login via Easyblog first because the submission says i need to test it first. so i am a bit stuck.

please help.

thanks