I’m trying to process a collision between a projectile and an enemy. When a projectile hits enemy it have to disappear, but instead a game is crushing in the moment of contact. I don’t know how to fix that

public class CollisionProcessing implements ContactListener {
    World world;

    public CollisionProcessing(World world) {
        super();
        this.world = world;
    }
    @Override
    public void beginContact(Contact contact) {}

    @Override
    public void endContact(Contact contact) {}

    @Override
    public void preSolve(Contact contact, Manifold manifold) {}

    @Override
    public void postSolve(Contact contact, ContactImpulse contactImpulse) {
        Fixture A = contact.getFixtureA();
        Fixture B = contact.getFixtureB();
        if (A == null || B == null) return;
        if (A.getUserData() == null || B.getUserData() == null) return;

        if (A.getUserData().equals(3)) {
            System.out.println("Bullet Body collision");
            A.getBody().setActive(false);
            world.destroyBody(A.getBody());
        }
        if (B.getUserData().equals(3)) {
            System.out.println("Body Bullet collision");
            B.getBody().setActive(false); // this
            world.destroyBody(B.getBody()); // and this commands cruch game when contact happens
        }
    }

I have tried world.destroyBody() and body.destroyFicture() but it does not help