Good afternoon !

First of all, thank you a lot for all your videos with SFML, you’re really helping a lot (and I’m looking forward to learning other things with your videos once I’m done with this project)

I’m trying to build the state machine with the tuto and I’m getting errors due to the unique pointer but I can’t figure out why it occurs, as I tried to compile with the code on github after testing mine but got exactly the same error which is : 

In file included from state_machine.cpp:1:
In file included from ./state_machine.hpp:4:
/Library/Developer/CommandLineTools/usr/include/c++/v1/memory:1574:36: error: no matching
      constructor for initialization of 'std::__1::unique_ptr<kg::State,
      std::__1::default_delete<kg::State> >'
                ::new ((void*)__p) _Tp(__a0);
                                   ^   ~~~~

I’m writing on a text editor and compiled it with a simple makefile (lines of compiling if it’s linked with the errors as it seems to be something my computer misses ?) :

all:
	@echo "** Building the game"
	g++ -g -Wall -o HollowRythm game.cpp stateMachine.cpp assetManager.cpp main.cpp splashState.cpp $(LIBS)
	./HollowRythm

Thank you !