Fatal error: pgadmin server could not be contacted

The fatal error window shows the following: 

pgAdmin Runtime Environment
--------------------------------------------------------
Python Path: "C:\Program Files\pgAdmin 4\v7\python\python.exe"
Runtime Config File: "C:\Users\hp\AppData\Roaming\pgadmin\runtime_config.json"
pgAdmin Config File: "C:\Program Files\pgAdmin 4\v7\web\config.py"
Webapp Path: "C:\Program Files\pgAdmin 4\v7\web\pgAdmin4.py"
pgAdmin Command: "C:\Program Files\pgAdmin 4\v7\python\python.exe -s C:\Program Files\pgAdmin 4\v7\web\pgAdmin4.py"
Environment:
  - ALLUSERSPROFILE: C:\ProgramData
  - APPDATA: C:\Users\hp\AppData\Roaming
  - asl.log: Destination=file
  - CHROME_CRASHPAD_PIPE_NAME: \\.\pipe\crashpad_11968_TFZMTKJGHSZRDQEE
  - 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: LAPTOP-JSDALHDL
  - ComSpec: C:\WINDOWS\system32\cmd.exe
  - DriverData: C:\Windows\System32\Drivers\DriverData
  - GOOGLE_API_KEY: no
  - GOOGLE_DEFAULT_CLIENT_ID: no
  - GOOGLE_DEFAULT_CLIENT_SECRET: no
  - HOMEDRIVE: C:
  - HOMEPATH: \Users\hp
  - LOCALAPPDATA: C:\Users\hp\AppData\Local
  - LOGONSERVER: \\LAPTOP-JSDALHDL
  - NUMBER_OF_PROCESSORS: 4
  - OneDrive: C:\Users\hp\OneDrive
  - OnlineServices: Online Services
  - OPENSSL_CONF: C:\Program Files\PostgreSQL\psqlODBC\etc\openssl.cnf
  - OS: Windows_NT
  - Path: C:\Program Files\pgAdmin 4\v7\runtime;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\dotnet\;C:\Program Files\nodejs\;C:\Users\hp\AppData\Local\Programs\Python\Python39\Scripts\;C:\Users\hp\AppData\Local\Programs\Python\Python39\;C:\Users\hp\AppData\Local\Microsoft\WindowsApps;C:\Users\hp\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\hp\AppData\Roaming\npm
  - PATHEXT: .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
  - PGADMIN_INT_KEY: 6def04f2-8187-44a2-8d56-53ac2f3de6e0
  - PGADMIN_INT_PORT: 5433
  - PGADMIN_SERVER_MODE: OFF
  - platformcode: KV
  - PROCESSOR_ARCHITECTURE: AMD64
  - PROCESSOR_IDENTIFIER: Intel64 Family 6 Model 78 Stepping 3, GenuineIntel
  - PROCESSOR_LEVEL: 6
  - PROCESSOR_REVISION: 4e03
  - 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
  - RegionCode: APJ
  - SystemDrive: C:
  - SystemRoot: C:\WINDOWS
  - TEMP: C:\Users\hp\AppData\Local\Temp
  - TMP: C:\Users\hp\AppData\Local\Temp
  - USERDOMAIN: LAPTOP-JSDALHDL
  - USERDOMAIN_ROAMINGPROFILE: LAPTOP-JSDALHDL
  - USERNAME: hp
  - USERPROFILE: C:\Users\hp
  - windir: C:\WINDOWS
--------------------------------------------------------

Total spawn time to start the pgAdmin4 server: 0.493 Sec

Help me out with this.