Cannot run QML debugger on MacOS

The QML debugger is not working on my MacBook :
Cannot break in QML code, no messages in QML debugger console.

QML debugging is enabled :

Lauching debugger progress bar is stuck :

Application output says QML debugging is enabled :

QML debugging is enabled. Only use this in a safe environment. 

After each run, i get this message (twice) :

Reinstalled QtCreator, same result