Hi friends, i have a problem in open rocket

When we do the simulation, it gives warning that the parachute is opened at high speed. However, the parachute opens at the apogee point where the velocity of the rocket is 0 m / s. When we examine the graph, we see that the velocity at the opening point of the parachute is -0.5 m / s. However, the warning says it is 35.8 m / s. What is the cause of this error, how can we solve it?