finally:
    world.apply_settings(original_settings)
    print('destroying actors')
    client.apply_batch([carla.command.DestroyActor(x) for x in actor_list])
    for sensor in sensor_list:
        sensor.destroy()
    print('done.')

最后应该将同步操作关闭：
finally:
world.apply_settings(original_settings)
print('destroying actors')
client.apply_batch([carla.command.DestroyActor(x) for x in actor_list])
for sensor in sensor_list:
sensor.destroy()
print('done.')
settings = world.get_settings()
settings.synchronous_mode = False
settings.fixed_delta_seconds = None
world.apply_settings(settings)

请问报这种错是什么原因造成的：destroying actors
done.
Traceback (most recent call last):
File “basic_api.py", line 93, in
main()
File "“basic_api.py", line 31, in main
ego_vehicle_bp = blueprint_library.find('vehicle.mercedes-benz.coupe')
IndexError: blueprint 'vehicle.mercedes-benz.coupe' not found