yes i was reading this manual as well. It’s just slightly different but throws the exactly same error message. The error implies that something is wrong with these lines but that is exactly whats written in the manual.
Sadly there is still no solution even some people from stackblitz looked over the code.
Auth0 is not working like shown in your example. So it would be really kind if you take a look into it or change your Quickstart tutorial or just post an example file that works on stackblitz.