找不到用于VS代码的Oracle开发人员工具。NET运行时

未启动用于VS代码的Oracle DevTools扩展。输出中有错误:

Information:25.04.2022, 16:03:36:Activating Extension...
Error:25.04.2022, 16:03:36:{}
Error:25.04.2022, 16:03:36:.NET Core Runtime version 3.1 or later not found

这是的输出 dotnet --info :

Пакет SDK для .NET (отражающий любой global.json):
 Version:   6.0.202
 Commit:    f8a55617d2

Среда выполнения:
 OS Name:     linuxmint
 OS Version:  20.2
 OS Platform: Linux
 RID:         linux-x64
 Base Path:   /snap/dotnet-sdk/162/sdk/6.0.202/

Host (useful for support):
  Version: 6.0.4
  Commit:  be98e88c76

.NET SDKs installed:
  6.0.202 [/snap/dotnet-sdk/162/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.4 [/snap/dotnet-sdk/162/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.4 [/snap/dotnet-sdk/162/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
  https://aka.ms/dotnet-download

我安装。NET Core通过命令捕捉 sudo snap install dotnet-runtime-60 --classic 和 sudo snap install dotnet-sdk --classic --channel=6.0 。我已经尝试安装runtime的5.0版本,将路径添加到SDK,并将runtime添加到 PATH 变量并将SDK和别名运行时删除到 dotnet 命令( sudo snap alias dotnet-runtime-60.dotnet dotnet ),但仍然不起作用。我做错了什么?