there is a major bug in current 3.1.1… and it was already solved in the internal 3.1.2 beta IN NOVEMBER as Keith wrote us ( read https://forum.literatureandlatte.com/t/compile-in-3-1-1-not-creating-pdf-table-of-contents/43319/5 )
3 months passed and i can’t deliver my PDF… please please please
3.1.2 is out…
Slàinte mhòr.
ahaha what a coincidence!!!
thank you… it works! 
For future reference, send us a support question on something like this. We’ll often send beta versions to individuals having specific problems even if we aren’t releasing the beta publicly.
literatureandlatte.com/contact-us
Katherine