windows - 无法联系 pgAdmin 4 服务器

Question

我已经安装了 PostgreSQL 12 和 pgAdmin 4。当我尝试运行 pgAdmin 4 时，我收到一个 fatal error “无法联系 pgAdmin 4 服务器”。我尝试以管理员身份运行它，删除“C:\Users\User\AppData\Roaming\pgAdmin”中的文件并将“C:\Program Files\PostgreSQL\12\bin”添加到系统环境变量中。我不知道我还能做什么。我确信 PostgreSQL 服务器正在运行，因为它在 services.msc 的服务正在运行。
这是运行 pgAdmin4 的日志。我可以看到这里有问题，但我不知道如何解决这个问题:

Traceback (most recent call last):
  File "C:/Program Files/pgAdmin 4/v4/web/pgAdmin4.py", line 217, in <module>
    main()
  File "C:/Program Files/pgAdmin 4/v4/web/pgAdmin4.py", line 199, in main
    app.run(
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib/site-packages\flask\app.py", line 943, in run
    run_simple(host, port, self, **options)
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib/site-packages\werkzeug\serving.py", line 1052, in run_simple
    inner()
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib/site-packages\werkzeug\serving.py", line 996, in inner
    srv = make_server(
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib/site-packages\werkzeug\serving.py", line 847, in make_server
    return ThreadedWSGIServer(
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib/site-packages\werkzeug\serving.py", line 740, in __init__
    HTTPServer.__init__(self, server_address, handler)
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib\socketserver.py", line 452, in __init__
    self.server_bind()
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib\http\server.py", line 140, in server_bind
    self.server_name = socket.getfqdn(host)
  File "C:/Program Files/pgAdmin 4/v4/venv/Lib\socket.py", line 756, in getfqdn
    hostname, aliases, ipaddrs = gethostbyaddr(name)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb3 in position 5: invalid start byte

这是另一个 .log 文件:

2020-08-31 17:15:12: Checking for system tray...
2020-08-31 17:15:12: Starting pgAdmin4 server...
2020-08-31 17:15:12: Creating server object, port:52967, key:459b0c86-b99e-46f0-9070-55554b9621d3, logfile:C:/Users/user/AppData/Local/pgadmin4.d41d8cd98f00b204e9800998ecf8427e.log
2020-08-31 17:15:12: Python Path: C:/Program Files/pgAdmin 4/v4/venv/Lib/site-packages;C:/Program Files/pgAdmin 4/v4/venv/DLLs;C:/Program Files/pgAdmin 4/v4/venv/Lib
2020-08-31 17:15:12: Python Home: C:/Program Files/pgAdmin 4/v4/venv
2020-08-31 17:15:12: Initializing Python...
2020-08-31 17:15:12: Python initialized.
2020-08-31 17:15:12: Adding new additional path elements
2020-08-31 17:15:12: Redirecting stderr...
2020-08-31 17:15:12: stderr redirected successfully.
2020-08-31 17:15:12: Initializing server...
2020-08-31 17:15:12: Webapp Path: C:/Program Files/pgAdmin 4/v4/web/pgAdmin4.py
2020-08-31 17:15:12: Server initialized, starting server thread...
2020-08-31 17:15:12: Open the application code and run it.
2020-08-31 17:15:12: Set the port number, key and force SERVER_MODE off
2020-08-31 17:15:12: PyRun_SimpleFile launching application server...
2020-08-31 17:15:13: Application Server URL: http://127.0.0.1:52967/?key=459b0c86-b99e-46f0-9070-55554b9621d3
2020-08-31 17:15:13: The server should be up. Attempting to connect and get a response.
2020-08-31 17:15:21: Failed to launch the application server, server thread exiting.

如果你知道我能做什么，请帮助我。

Answer 1

在自己处理了这个问题后，错误和堆栈跟踪与给定的完全相同，我终于找到了解决方案。
我的电脑的主机名是导致问题的原因，因为它包含一个非 ASCII 字符的“æ”。所以主机名，如果用于 pgadmin，显然只能包含 ASCII 字符。
解决方案是将主机名更改为不带 'æ' 的名称(就我而言是 æ -> ae)。主机名是电脑的实际名称，在系统属性下找到并编辑(此电脑然后是属性)。