AttributeError: 'MultirotorClient' object has no attribute 'resetUnreal'

[Jiangsir0113]

Connected!
Client Ver:1 (Min Req: 1), Server Ver:1 (Min Req: 1)

enter reset
done randomizing

Traceback (most recent call last):
File "D:/UAV/UAV-auto-navigation-and-object-tracking-based-on-RL/airsim_rl/SAC.py", line 673, in
sac(device=device)
File "D:/UAV/UAV-auto-navigation-and-object-tracking-based-on-RL/airsim_rl/SAC.py", line 570, in sac
o = env.reset()
File "D:\UAV\UAV-auto-navigation-and-object-tracking-based-on-RL\airsim_rl\gym_airsim\envs\AirGym.py", line 224, in reset
self.airgym.unreal_reset()
File "D:\UAV\UAV-auto-navigation-and-object-tracking-based-on-RL\airsim_rl\gym_airsim\envs\airlearningclient.py", line 173, in unreal_reset
self.client.resetUnreal(1.5, 2.5) ###1,2.5
AttributeError: 'MultirotorClient' object has no attribute 'resetUnreal'