Autoposting: 500 Error Codes for FB, Twitter and LinkedIn Access

Hello,

I am trying to add Autoposting within the basic settings and using a centralized account for all auto updates. When I click on the button to sign in with either FB, Twitter or LinkedIn to grant access I'm getting an error code for each one that says 'layout twitter _ step0 not found'. I get the same message for FB and LinkedIn. Would appreciate some assistance with this.

Thanks,

Cat'