Bug or code problem? Templates on uWS

I'm trying to build the uWS library (https://github.com/uNetworking/uWebSockets) but Clion is having none of it.

From one of the examples (in this post I've used examples/broadcast)

Its complaining round the templates missing a create statement on a typedef.

If you go into App.h on line 225 you'll see the correct statement.

Clion should be picking this up. There is a typedef at the end of that file line 608 which provides a template but since its a typedef the <true> value is used.

What am I missing?

Tom