致命错误：无法联系 pgAdmin 4 服务器：在 Windows 10 上

如何解决致命错误：无法联系 pgAdmin 4 服务器：在 Windows 10 上

我已经在 Windows 10 上安装了 Postgres v9.6.22，但是当我尝试运行 pgAdmin4 时，出现错误

致命错误：无法联系 pgAdmin 4 服务器

完整的错误日志是

pgAdmin Runtime Environment
--------------------------------------------------------
Python Path: "C:\Program Files\Postgresql\9.6\pgAdmin 4\python\python.exe"
Runtime Config File: "C:\Users\kunal.sharma\AppData\Roaming\pgadmin\runtime_config.json"
pgAdmin Config File: "C:\Program Files\Postgresql\9.6\pgAdmin 4\web\config.py"
Webapp Path: "C:\Program Files\Postgresql\9.6\pgAdmin 4\web\pgAdmin4.py"
pgAdmin Command: "C:\Program Files\Postgresql\9.6\pgAdmin 4\python\python.exe -s C:\Program Files\Postgresql\9.6\pgAdmin 4\web\pgAdmin4.py"
Environment: 
  - ALLUSERSPROFILE: C:\ProgramData
  - APPDATA: C:\Users\kunal.sharma\AppData\Roaming
  - CHROME_CRASHPAD_PIPE_NAME: \\.\pipe\crashpad_13124_AXKZZMOOPTLLWRSN
  - CHROME_RESTART: NW.js|Whoa! NW.js has crashed. relaunch Now?|LEFT_TO_RIGHT
  - CommonProgramFiles: C:\Program Files\Common Files
  - CommonProgramFiles(x86): C:\Program Files (x86)\Common Files
  - CommonProgramW6432: C:\Program Files\Common Files
  - COmpuTERNAME: DESKTOP-US1VJQM
  - ComSpec: C:\WINDOWS\system32\cmd.exe
  - DriverData: C:\Windows\System32\Drivers\DriverData
  - FPS_broWSER_APP_PROFILE_STRING: Internet Explorer
  - FPS_broWSER_USER_PROFILE_STRING: Default
  - HOMEDRIVE: C:
  - HOMEPATH: \Users\kunal.sharma
  - JAVA_HOME: C:\Program Files\Java\jdk-13.0.2+8
  - LOCALAPPDATA: C:\Users\kunal.sharma\AppData\Local
  - logoNSERVER: \\DESKTOP-US1VJQM
  - M2_HOME: C:\Program Files\apache-maven-3.6.3-bin\apache-maven-3.6.3
  - MAVEN_HOME: C:\Program Files\apache-maven-3.6.3-bin\apache-maven-3.6.3
  - NUMBER_OF_PROCESSORS: 8
  - OneDrive: C:\Users\kunal.sharma\OneDrive
  - OS: Windows_NT
  - Path: C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\Git\cmd;C:\Program Files\Java\jdk-13.0.2+8\bin;C:\Program Files\apache-maven-3.6.3-bin\apache-maven-3.6.3\bin;C:\Program Files\Postgresql\9.6\bin;;C:\Program Files\Docker\Docker\resources\bin;C:\ProgramData\DockerDesktop\version-bin;C:\Users\kunal.sharma\AppData\Local\Microsoft\WindowsApps;
  - PATHEXT: .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
  - PGADMIN_INT_KEY: b0138337-8f64-40a9-916f-88440672a12f
  - PGADMIN_INT_PORT: 50822
  - PGADMIN_SERVER_MODE: OFF
  - PROCESSOR_ARCHITECTURE: AMD64
  - PROCESSOR_IDENTIFIER: Intel64 Family 6 Model 142 Stepping 12,GenuineIntel
  - PROCESSOR_LEVEL: 6
  - PROCESSOR_REVISION: 8e0c
  - ProgramData: C:\ProgramData
  - ProgramFiles: C:\Program Files
  - ProgramFiles(x86): C:\Program Files (x86)
  - ProgramW6432: C:\Program Files
  - PSModulePath: C:\Program Files\WindowsPowerShell\Modules;C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules
  - PUBLIC: C:\Users\Public
  - SESSIONNAME: Console
  - SystemDrive: C:
  - SystemRoot: C:\WINDOWS
  - TEMP: C:\Users\KUNAL~1.SHA\AppData\Local\Temp
  - TMP: C:\Users\KUNAL~1.SHA\AppData\Local\Temp
  - USERDOMAIN: DESKTOP-US1VJQM
  - USERDOMAIN_ROAMINGPROFILE: DESKTOP-US1VJQM
  - USERNAME: kunal.sharma
  - USERPROFILE: C:\Users\kunal.sharma
  - windir: C:\WINDOWS
  - ZES_ENABLE_SYSMAN: 1
--------------------------------------------------------

Traceback (most recent call last):
  File "C:\Program Files\Postgresql\9.6\pgAdmin 4\web\pgAdmin4.py",line 98,in <module>
    app = create_app()
  File "C:\Program Files\Postgresql\9.6\pgAdmin 4\web\pgadmin\__init__.py",line 349,in create_app
    if not os.path.exists(sqlITE_PATH) or get_version() == -1:
  File "C:\Program Files\Postgresql\9.6\pgAdmin 4\web\pgadmin\setup\db_version.py",line 19,in get_version
    return version.value
AttributeError: 'nonetype' object has no attribute 'value'

我知道之前有人问过这个问题，但我已经尝试了答案中提供的所有解决方案，但无法启动并运行 Postgres 服务器。