about InitError_Init_VRClientDLLNotFound

[tonyhaohan]

when I'm trying DKitty hardware, there is such a problem:
(base) tonyhao@tonyhao-fit:~/tonyRLws1$ python trys/tryRobel2.py Traceback (most recent call last): File "trys/tryRobel2.py", line 7, in <module> env = gym.make('DKittyWalkFixed-v0',device_path='/dev/ttyUSB0', File "/home/tonyhao/anaconda3/lib/python3.8/site-packages/gym/envs/registration.py", line 145, in make return registry.make(id, **kwargs) File "/home/tonyhao/anaconda3/lib/python3.8/site-packages/gym/envs/registration.py", line 90, in make env = spec.make(**kwargs) File "/home/tonyhao/anaconda3/lib/python3.8/site-packages/gym/envs/registration.py", line 60, in make env = cls(**_kwargs) File "/home/tonyhao/tonyRLws1/robel/robel/utils/configurable.py", line 102, in __init__ base_init(self, *args, **kwargs) File "/home/tonyhao/tonyRLws1/robel/robel/dkitty/walk.py", line 86, in __init__ super().__init__( File "/home/tonyhao/tonyRLws1/robel/robel/dkitty/base_env.py", line 252, in __init__ super().__init__(*args, **kwargs) File "/home/tonyhao/tonyRLws1/robel/robel/dkitty/base_env.py", line 112, in __init__ self.tracker = self._add_component(tracker_builder) File "/home/tonyhao/tonyRLws1/robel/robel/robot_env.py", line 549, in _add_component component = component_builder.build( File "/home/tonyhao/tonyRLws1/robel/robel/components/tracking/builder.py", line 54, in build return VrTrackerComponent( File "/home/tonyhao/tonyRLws1/robel/robel/components/tracking/vr_tracker.py", line 48, in __init__ self._VR_CLIENT = VrClient() File "/home/tonyhao/tonyRLws1/robel/robel/components/tracking/virtual_reality/client.py", line 45, in __init__ self._vr_system = openvr.init(openvr.VRApplication_Other) File "/home/tonyhao/.local/lib/python3.8/site-packages/openvr/__init__.py", line 7170, in init initInternal2(applicationType, pStartupInfo) File "/home/tonyhao/.local/lib/python3.8/site-packages/openvr/__init__.py", line 7302, in initInternal2 openvr.error_code.InitError.check_error_value(error.value) File "/home/tonyhao/.local/lib/python3.8/site-packages/openvr/error_code/__init__.py", line 23, in check_error_value raise error_class(error_value, message) openvr.error_code.InitError_Init_VRClientDLLNotFound
I have installed steam and steamvr on system ubuntu20.04. this is the code i ran:
`import numpy as np
import gym
from gym.spaces import Discrete, Box
import mujoco_py
import robel

env = gym.make('DKittyWalkFixed-v0',device_path='/dev/ttyUSB0',
torso_tracker_id='LHR-9510D433', use_dict_obs=True)
#env = gym.make('DKittyWalkFixed-v0')
act = [-1,-1,-1,1,-1,-1,1,1,1,-1,1,1]

while True:
print("doing new episode")
obs = env.reset()
done = False
while not done:
obs , ret , done , _ = env.step(act)
print(obs)
`
how to solve this problem?