VSCODE AND UNITY AUTOCOMPLETION NOT WORKING??

When I open my script on unity, it wont give me auto completion such as gameObjects etc.

And this is what is showing me on output whenever I open script::

``` Starting OmniSharp server at 15/12/2020, 6:00:14 pm Target: c:\Users\AdolfUrian\Unity Projects\3D\3D.sln

OmniSharp server started. Path: c:\Users\AdolfUrian.vscode\extensions\ms-dotnettools.csharp-1.23.7.omnisharp\1.37.4\OmniSharp.exe PID: 6504

[info]: OmniSharp.Stdio.Host

     Starting OmniSharp on Windows 6.2.9200.0 (x64)

[info]: OmniSharp.Services.DotNetCliService

     DotNetPath set to dotnet

[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator

     Located 1 MSBuild instance(s)
         1: StandAlone 16.8.0 - "c:\Users\AdolfUrian\.vscode\extensions\ms-dotnettools.csharp-1.23.7\.omnisharp\1.37.4\.msbuild\Current\Bin"

[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator

     MSBUILD_EXE_PATH environment variable set to 'c:\Users\AdolfUrian\.vscode\extensions\ms-dotnettools.csharp-1.23.7\.omnisharp\1.37.4\.msbuild\Current\Bin\MSBuild.exe'

[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator

     Registered MSBuild instance: StandAlone 16.8.0 - "c:\Users\AdolfUrian\.vscode\extensions\ms-dotnettools.csharp-1.23.7\.omnisharp\1.37.4\.msbuild\Current\Bin"
         CscToolExe = csc.exe
         CscToolPath = c:\Users\AdolfUrian\.vscode\extensions\ms-dotnettools.csharp-1.23.7\.omnisharp\1.37.4\.msbuild\Current\Bin\Roslyn
         MSBuildExtensionsPath = c:\Users\AdolfUrian\.vscode\extensions\ms-dotnettools.csharp-1.23.7\.omnisharp\1.37.4\.msbuild
         MSBuildToolsPath = c:\Users\AdolfUrian\.vscode\extensions\ms-dotnettools.csharp-1.23.7\.omnisharp\1.37.4\.msbuild\Current\Bin

[info]: OmniSharp.Cake.CakeProjectSystem

     Detecting Cake files in 'c:\Users\AdolfUrian\Unity Projects\3D'.

[info]: OmniSharp.Cake.CakeProjectSystem

     Could not find any Cake files

[info]: OmniSharp.MSBuild.ProjectSystem

     Detecting projects in 'c:\Users\AdolfUrian\Unity Projects\3D\3D.sln'.

[info]: OmniSharp.MSBuild.ProjectManager

     Queue project update for 'c:\Users\AdolfUrian\Unity Projects\3D\Assembly-CSharp.csproj'

[info]: OmniSharp.Script.ScriptProjectSystem

     Detecting CSX files in 'c:\Users\AdolfUrian\Unity Projects\3D'.

[info]: OmniSharp.Script.ScriptProjectSystem

     Could not find any CSX files

[info]: OmniSharp.WorkspaceInitializer

     Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0

[info]: OmniSharp.MSBuild.ProjectManager

     Loading project: c:\Users\AdolfUrian\Unity Projects\3D\Assembly-CSharp.csproj

[info]: OmniSharp.WorkspaceInitializer

     Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.Completion.CompletionOptionsProvider, Order: 0

[info]: OmniSharp.WorkspaceInitializer

     Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.RenameWorkspaceOptionsProvider, Order: 100

[info]: OmniSharp.WorkspaceInitializer

     Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.ImplementTypeWorkspaceOptionsProvider, Order: 110

[info]: OmniSharp.WorkspaceInitializer

     Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.BlockStructureWorkspaceOptionsProvider, Order: 140

[info]: OmniSharp.WorkspaceInitializer

     Configuration finished.

[info]: OmniSharp.Stdio.Host

     Omnisharp server running using Stdio at location 'c:\Users\AdolfUrian\Unity Projects\3D' on host 5264.

[fail]: OmniSharp.MSBuild.ProjectLoader

     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

[warn]: OmniSharp.MSBuild.ProjectManager

     Failed to load project file 'c:\Users\AdolfUrian\Unity Projects\3D\Assembly-CSharp.csproj'.

c:\Users\AdolfUrian\Unity Projects\3D\Assembly-CSharp.csproj c:\Users\AdolfUrian.vscode\extensions\ms-dotnettools.csharp-1.23.7.omnisharp\1.37.4.msbuild\Current\Bin\Microsoft.Common.CurrentVersion.targets(1180,5): 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

[fail]: OmniSharp.MSBuild.ProjectManager

     Attempted to update project that is not loaded: c:\Users\AdolfUrian\Unity Projects\3D\Assembly-CSharp.csproj

```

Help Plssss, I really need to have auto completion so that I can discover many functions and methods.