ConnectionRefusedError: [WinError 10061] 由于目标计算机积极拒绝，无法连接

VScode调试fastAPI提示由于目标计算机积极拒绝，无法连接。原来是代理问题

Traceback (most recent call last):
  File "C:\Users\Alexander\AppData\Local\Programs\Python\Python310\lib\runpy.py", line 196, in _run_module_as_main
  File "C:\Users\Alexander\AppData\Local\Programs\Python\Python310\lib\runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "c:\Users\Alexander\.vscode\extensions\ms-python.python-2022.10.1\pythonFiles\lib\python\debugpy\launcher\__main__.py", line 91, in <module>
    main()
  File "c:\Users\Alexander\.vscode\extensions\ms-python.python-2022.10.1\pythonFiles\lib\python\debugpy\launcher\__main__.py", line 47, in main
    launcher.connect(host, port)
  File "c:\Users\Alexander\.vscode\extensions\ms-python.python-2022.10.1\pythonFiles\lib\python\debugpy\launcher/../..\debugpy\launcher\__init__.py", line 27, in connect
    sock.connect((host, port))
ConnectionRefusedError: [WinError 10061] 由于目标计算机积极拒绝，无法连接。