Question Visual Code Error + No Intellisense

I just got into Unity yesterday but I can't get Visual code to Work.
First, I'm getting these errors in the Omnisharp Log:

Code (CSharp):

1. Starting OmniSharp server at 1/7/2023, 2:49:38 PM
2.     Target: c:\Users\Aymane\First Project\First Project.sln
3.  
4. OmniSharp server started with .NET 7.0.101
5. .
6.     Path: c:\Users\Aymane\.vscode\extensions\ms-dotnettools.csharp-1.25.2-win32-x64\.omnisharp\1.39.2-net6.0\OmniSharp.dll
7.     PID: 10192
8.  
9. [info]: OmniSharp.Stdio.Host
10.         Starting OmniSharp on Windows 10.0.19045.0 (x64)
11. [info]: OmniSharp.Services.DotNetCliService
12.         Checking the 'DOTNET_ROOT' environment variable to find a .NET SDK
13. [info]: OmniSharp.Services.DotNetCliService
14.         Using the 'dotnet' on the PATH.
15. [info]: OmniSharp.Services.DotNetCliService
16.         DotNetPath set to dotnet
17. [info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
18.         Located 1 MSBuild instance(s)
19.             1: .NET Core SDK 7.0.101 17.4.0 - "C:\Program Files\dotnet\sdk\7.0.101\"
20. [info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
21.        Registered MSBuild instance: .NET Core SDK 7.0.101 17.4.0 - "C:\Program Files\dotnet\sdk\7.0.101\"
22. [info]: OmniSharp.WorkspaceInitializer
23.        Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0
24. [info]: OmniSharp.Cake.CakeProjectSystem
25.        Detecting Cake files in 'c:\Users\Aymane\First Project'.
26. [info]: OmniSharp.Cake.CakeProjectSystem
27.        Did not find any Cake files
28. [info]: OmniSharp.MSBuild.ProjectSystem
29.        Detecting projects in 'c:\Users\Aymane\First Project\First Project.sln'.
30. [info]: OmniSharp.MSBuild.ProjectManager
31.        Queue project update for 'c:\Users\Aymane\First Project\Assembly-CSharp.csproj'
32. [info]: OmniSharp.Script.ScriptProjectSystem
33.        Detecting CSX files in 'c:\Users\Aymane\First Project'.
34. [info]: OmniSharp.Script.ScriptProjectSystem
35.        Did not find any CSX files
36. [info]: OmniSharp.WorkspaceInitializer
37.        Configuration finished.
38. [info]: OmniSharp.Stdio.Host
39.        Omnisharp server running using Stdio at location 'c:\Users\Aymane\First Project' on host 10572.
40. [info]: OmniSharp.MSBuild.ProjectManager
41.        Loading project: c:\Users\Aymane\First Project\Assembly-CSharp.csproj
42. [fail]: OmniSharp.MSBuild.ProjectLoader
43.        The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks
44. [warn]: OmniSharp.MSBuild.ProjectManager
45.        Failed to load project file 'c:\Users\Aymane\First Project\Assembly-CSharp.csproj'.
46. c:\Users\Aymane\First Project\Assembly-CSharp.csproj
47. C:\Program Files\dotnet\sdk\7.0.101\Microsoft.Common.CurrentVersion.targets(1229,5): Error: The reference assemblies for .NETFramework,Version=v4.7.1 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks
48.  
49. [fail]: OmniSharp.MSBuild.ProjectManager
50.        Attempted to update project that is not loaded: c:\Users\Aymane\First Project\Assembly-CSharp.csproj
51. [warn]: OmniSharp.Roslyn.CSharp.Services.InlayHints.InlayHintService
52.        Inlay hints requested for document not in workspace Location { FileName = c:\Users\Aymane\First Project\Assets\NewBehaviourScript.cs, Range = Range { Start = Point { Line = 0, Column = 0 }, End = Point { Line = 18, Column = 0 } } }

And second, there is no Intellisense why I try to code.
Please help and thank you

 

Just cut your losses and switch to a different IDE. Visual Studio Code is no longer supported for Unity development.

 

I did, the ordinary Visual Studio 2022 works just fine.

 

Try 'regenerate project files'. It works fine for me.

 

Check the extension readme on GitHub. To work with Unity, you need to set

omnisharp.useModernNet

to

false

and install some additional stuff (Full .Net Framework Runtime and MSBuild Tools on Windows, a preview version of Mono on macOS).