A3C_continues.py

[Gjunze]

'Viewer' object has no attribute 'isopen' File "E:\anaconda\envs\tf2\lib\site-packages\gym\envs\classic_control\rendering.py", line 81, in close AttributeError: 'Viewer' object has no attribute 'isopen' Traceback (most recent call last): File "E:\anaconda\envs\tf2\lib\site-packages\gym\envs\classic_control\rendering.py", line 165, in del if self.isopen and sys.meta_path: if self.isopen and sys.meta_path: if self.isopen and sys.meta_path: self.close() File "E:\anaconda\envs\tf2\lib\site-packages\gym\envs\classic_control\rendering.py", line 165, in del if self.isopen and sys.meta_path: AttributeError: 'Viewer' object has no attribute 'isopen' AttributeError: 'Viewer' object has no attribute 'isopen' self.close() File "E:\anaconda\envs\tf2\lib\site-packages\gym\envs\classic_control\rendering.py", line 81, in close AttributeError: 'Viewer' object has no attribute 'isopen' AttributeError: 'Viewer' object has no attribute 'isopen' if self.isopen and sys.meta_path: File "E:\anaconda\envs\tf2\lib\site-packages\gym\envs\classic_control\rendering.py", line 81, in close AttributeError: 'Viewer' object has no attribute 'isopen' if self.isopen and sys.meta_path: AttributeError: 'Viewer' object has no attribute 'isopen'

l don't konw how to fix it