Autoposting

Hello, i can't set autoposting process, after creating app, the setup process cannot go on and system shows an error like this "Error: 500 Layout twittestep0" (after i pushed signin button)
Please could you give me help in order to solve this issue?
My skills are not high..
I would only that any post of my site appear on my twitter and facebook account, but both seem not work correctly.
Belowe you find all credential access, if you need more detail please fell free to request
Thank you in advance
Salvatore