使用 'env.render()' 时出现错误:"dexError: list index out of range"

Hi, when running the code: `Python -m baselines.run --alg=ppo2 --env=Pendulum-v0 --num_timesteps=0 --load_path=~/models/Pend-v0 --play` The error is as follows: `Running trained model 2019-06-22 16:05:51.063036: I tensorflow/stream_executor/dso_loader.cc:152] successfully opened CUDA library libcublas.so.10.0 locally Traceback (most recent call last): File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/runpy.py", line 193, in _run_module_as_main: "__main__", mod_spec) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/runpy.py", line 85, in _run_code: exec(code, run_globals) File "/home/csy/drl/mujoco-gym/baselines/baselines/run.py", line 256, in <module>: main(sys.argv) File "/home/csy/drl/mujoco-gym/baselines/baselines/run.py", line 244, in main: env.render() File "/home/csy/drl/mujoco-gym/baselines/baselines/common/vec_env/dummy_vec_env.py", line 79, in render: return self.envs[0].render(mode=mode) File "/home/csy/drl/mujoco-gym/gym/gym/core.py", line 230, in render: return self.env.render(mode, **kwargs) File "/home/csy/drl/mujoco-gym/gym/gym/core.py", line 230, in render: return self.env.render(mode, **kwargs) File "/home/csy/drl/mujoco-gym/gym/gym/core.py", line 230, in render: return self.env.render(mode, **kwargs) File "/home/csy/drl/mujoco-gym/gym/gym/envs/classic_control/pendulum.py", line 61, in render: from gym.envs.classic_control import rendering File "/home/csy/drl/mujoco-gym/gym/gym/envs/classic_control/rendering.py", line 27, in <module>: from pyglet.gl import * File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/__init__.py", line 239, in <module>: import pyglet.window File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/window/__init__.py", line 1896, in <module>: gl._create_shadow_window() File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/__init__.py", line 208, in _create_shadow_window: _shadow_window = Window(width=1, height=1, visible=False) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/window/xlib/__init__.py", line 166, in __init__: super(XlibWindow, self).__init__(*args, **kwargs) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/window/__init__.py", line 512, in __init__: config = screen.get_best_config(template_config) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/canvas/base.py", line 159, in get_best_config: configs = self.get_matching_configs(template) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/canvas/xlib.py", line 182, in get_matching_configs: configs = template.match(canvas) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/xlib.py", line 31, in match: have_13 = info.have_version(1, 3) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 12, in have_version: return glXQueryVersion(version) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 15, in glXQueryVersion: return glXQueryVersionEXT(version) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 20, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 23, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 26, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 30, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 33, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 36, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 39, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 42, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 45, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 48, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 51, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 54, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 57, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 60, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 63, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 66, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 69, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 72, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 75, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 78, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 81, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 84, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 87, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 90, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 93, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 96, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 99, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 102, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 105, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/gl/glx_info.py", line 108, in glXQueryVersionEXT: return glXQueryVersionEXT(version, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) File "/home/csy/anaconda3/envs/mujoco-gym/lib/python3.6/site-packages/pyglet/