Can you please send a screenshot of the error you receive? Presently, I assume that you get an error similar to this:
An error occurred while running the simulation and the simulation was terminated
Considering the explanation of the issue, I feel it is possibly because of the Assertion block in 'parrotMinidroneCompetition/Stop Simulation' which turns true at a specific time (1.77) that stops the simulation.
When you navigate inside the model, you observe that the Flag signal is the output from 'parrotMinidroneCompetition/Flight Control System (flightControlSystem)/Control System/Crash Predictor Flags' block. You can navigate here.
To know the exact blocks that is causing the simulation to stop, you can consider using 'To Workspace' blocks at the u1, u2,u3 and u4 signals. After you run the simulation, you can check the corresponding workspace variables that has changed the value to 1 from 0.
I hope this helps!