I remove lr-mupen64plus-next and lr-ppsspp from retroarch setup.
I install it again and it works ! I can go into the rgui menu (strange thing i mapped hotkey on the xbox button and i can with select + Y !!! (but i can !).
With another emulator (lr-beetle-psx, i can quit a game with select + start.
Not from fresh install emulator. Have i something to parameter in rgui menu
Regards.