程序运行结束时报错：
Exception ignored in: <function Session.__del__ at 0xfffe324c7740>
Traceback (most recent call last):
File "/home/HwHiAiUser/.local/lib/python3.11/site-packages/nebula3/gclient/net/Session.py", line 336, in __del__
File "/home/HwHiAiUser/.local/lib/python3.11/site-packages/nebula3/gclient/net/Session.py", line 298, in release
File "/home/HwHiAiUser/.local/lib/python3.11/site-packages/nebula3/gclient/net/Connection.py", line 263, in signout
File "/home/HwHiAiUser/.local/lib/python3.11/site-packages/nebula3/graph/GraphService.py", line 1603, in signout
File "/home/HwHiAiUser/.local/lib/python3.11/site-packages/nebula3/graph/GraphService.py", line 1606, in send_signout
AttributeError: 'NoneType' object has no attribute 'CALL'
Exception ignored in: <function ConnectionPool.__del__ at 0xfffe32339a80>
Traceback (most recent call last):
File "/home/HwHiAiUser/.local/lib/python3.11/site-packages/nebula3/gclient/net/ConnectionPool.py", line 43, in __del__
File "/home/HwHiAiUser/.local/lib/python3.11/site-packages/nebula3/gclient/net/ConnectionPool.py", line 252, in close
File "/usr/lib/python3.11/logging/__init__.py", line 1500, in warning
File "/usr/lib/python3.11/logging/__init__.py", line 1744, in isEnabledFor
TypeError: 'NoneType' object is not callable