我是PostgreSQL的新手，尝试在Windows 10设备上安装PostgreSQL 13 / 14时遇到以下错误。

"The environment variable COMSPEC does not seem to point to the cmd.exe or there is a training semicolon present. Please fix this variable and restart installation."

The screenshot of the pop up error

COMSPEC系统变量

这是我的COMSPEC environment variable的设置

内容installbuilder_installer.log

Log started 05/06/2022 at 17:51:52
Preferred installation mode : qt
Trying to init installer in mode qt
Mode qt successfully initialized
Setting variable whoami from C:\WINDOWS\System32\whoami 
Script exit code: 0

Script output:
 atrapa\junkwong

Script stderr:
 

Executing C:\WINDOWS\System32\icacls "C:\Users\junkwong\AppData\Local\Temp/postgresql_installer_c7c2d91f40" /inheritance:r
Script exit code: 0

Script output:
 processed file: C:\Users\junkwong\AppData\Local\Temp/postgresql_installer_c7c2d91f40
Successfully processed 1 files; Failed processing 0 files

Script stderr:
 

Executing C:\WINDOWS\System32\icacls "C:\Users\junkwong\AppData\Local\Temp/postgresql_installer_c7c2d91f40" /T /Q /grant "atrapa\junkwong:(OI)(CI)F"
Script exit code: 0

Script output:
 Successfully processed 1 files; Failed processing 0 files

Script stderr:
 

Executing C:\WINDOWS\System32\cscript //NoLogo "C:\Users\junkwong\AppData\Local\Temp\postgresql_installer_c7c2d91f40\prerun_checks.vbs"
Script exit code: 0

Script output:
 The scripting host appears to be functional.

Script stderr:
 

Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 Base Directory. Setting variable iBaseDirectory to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 Branding. Setting variable iBranding to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 Version. Setting variable brandingVer to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 Shortcuts. Setting variable iShortcut to empty value
[17:52:01] Using branding: PostgreSQL 14
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 SB_Version. Setting variable sb_version to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 pgAdmin_Version. Setting variable pgadmin_version to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 CLT_Version. Setting variable clt_version to empty value
Could not find registry key HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-x64-14 Data Directory. Setting variable server_data_dir to empty value
Executing C:\Users\junkwong\AppData\Local\Temp/postgresql_installer_c7c2d91f40/temp_check_comspec.bat 
Script exit code: 0

Script output:
 

Script stderr:
 

Exiting with code 1

COMSPEC变量确实是设置为系统变量，而不是像许多帖子建议的用户变量。）

我尝试过的方法：

1.我已经在命令提示符下运行了"%COMSPEC%" /C "echo test ok"，结果see here显示为“test ok
1.已在管理员命令下运行安装。
1.安装不同版本的PostgreSQL，包括14.2.2、14.3.1和13.7.1（均生成相同的错误消息）
1.尝试了Prayash Koirala提出的解决方案，但找不到Command Processor文件Postgresql 9.4 installation/Windows 8.1/ COMSPEC issue
1.已尝试此Problems Installing PostgreSQL 9.2。但建议的路径中没有bitrock_installer_xxxx.log
非常感谢，任何帮助或建议都是感激不尽的。
祝你今天愉快
此致！
康俊