From the error details shared by you its clear few fields are missing,Please check if the datasource to which the extract is pointing has the fields or not?
were there any changes to the extract or underlying DB?
Were there any fields removed from the workbook?
hope it helps.
My fields have not changed. I was able to refresh extracts with Tableau 10.5 after receiving the errors in 2018.01.
I rechecked. Same issue. 2018.01 fails to connect. 10.5 is fine.
I hope this helps!
I am glad to know its working for you in 10.5 version.