gearbox failure

I have a 2013 Peugeot semi-automatic 110.000 km car. My vehicle gives a gearbox failure in congested traffic. Gaza When it touches it, it heads forward and stops. After resting for 1 hour or so, I can continue on the road without any problems. I am waiting for my friends who had problems and found a definite solution in this regard to write. I wish everyone a good day.