2023 Nissan Pathfinder brakes problems

I write to report the issues which are a safety hazard to me & whom ever operates it or I transport in it, Which creates a higher concern for my & their safety . I purchased a 2023 Nissan Pathfinder SL on July 6, 2023 an eight seater model 4WD with 8 miles on the speedometer manufactured by Nissan as per label on door April 2023.The problem I have experienced recently after a month & two weeks now. The vehicle starts are normal but once the vehicle is on the road and is within normal operation temperature.

The contact owns a 2023 Nissan Pathfinder. The contact stated while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. The vehicle failed to stop immediately. The vehicle was taken to the dealer; however, no cause for the failure was found. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 21,000.