No errors appear in Vscode (eg errors referencing wrong typed)

Question

I’ve looked at everything I had and I haven’t got it yet...

I am studying ASP.NET Core, with C#, and no errors appear in Visual Studio Code.

Example: if I reference a class with the wrong name, it does not give any warning. Where can I get this? (The structure errors appear)

The mistake:

Some Projects have Trouble loading. Please review the output for more Details.

Source: C# (Extension)

   [info]: OmniSharp.MSBuild.ProjectManager
        Loading project: c:\Users\Vanessa\Desktop\Engenharia de Computação\Estágio\SSTecnologia\2-DotNETCore\ProAgil.Domain\ProAgil.Domain.csproj
[warn]: OmniSharp.MSBuild.ProjectManager
        Failed to load project file 'c:\Users\Vanessa\Desktop\Engenharia de Computação\Estágio\SSTecnologia\2-DotNETCore\ProAgil.Domain\ProAgil.Domain.csproj'.
c:\Users\Vanessa\Desktop\Engenharia de Computação\Estágio\SSTecnologia\2-DotNETCore\ProAgil.Domain\ProAgil.Domain.csproj(1,1)
Microsoft.Build.Exceptions.InvalidProjectFileException: o SDK 'Microsoft.NET.Sdk' especificado não pôde ser encontrado.  c:\Users\Vanessa\Desktop\Engenharia de Computação\Estágio\SSTecnologia\2-DotNETCore\ProAgil.Domain\ProAgil.Domain.csproj
   em Microsoft.Build.Shared.ProjectErrorUtilities.ThrowInvalidProject(String errorSubCategoryResourceName, IElementLocation elementLocation, String resourceName, Object[] args)
   em Microsoft.Build.Evaluation.Evaluator`4.ExpandAndLoadImportsFromUnescapedImportExpressionConditioned(String directoryOfImportingFile, ProjectImportElement importElement, List`1& projects, SdkResult& sdkResult, Boolean throwOnFileNotExistsError)
   em Microsoft.Build.Evaluation.Evaluator`4.ExpandAndLoadImports(String directoryOfImportingFile, ProjectImportElement importElement, SdkResult& sdkResult)
   em Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
   em Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
   em Microsoft.Build.Evaluation.Evaluator`4.Evaluate(ILoggingService loggingService, BuildEventContext buildEventContext)
   em Microsoft.Build.Evaluation.Project.Reevaluate(ILoggingService loggingServiceForEvaluation, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   em Microsoft.Build.Evaluation.Project.ReevaluateIfNecessary(ILoggingService loggingServiceForEvaluation, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   em Microsoft.Build.Evaluation.Project.Initialize(IDictionary`2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   em Microsoft.Build.Evaluation.Project..ctor(String projectFile, IDictionary`2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectCollection projectCollection, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
   em Microsoft.Build.Evaluation.ProjectCollection.LoadProject(String fileName, IDictionary`2 globalProperties, String toolsVersion)
   em OmniSharp.MSBuild.ProjectLoader.EvaluateProjectFileCore(String filePath) na D:\a\1\s\src\OmniSharp.MSBuild\ProjectLoader.cs:linha 129
   em OmniSharp.MSBuild.ProjectLoader.BuildProject(String filePath) na D:\a\1\s\src\OmniSharp.MSBuild\ProjectLoader.cs:linha 72
   em OmniSharp.MSBuild.ProjectFile.ProjectFileInfo.Load(String filePath, ProjectIdInfo projectIdInfo, ProjectLoader loader) na D:\a\1\s\src\OmniSharp.MSBuild\ProjectFile\ProjectFileInfo.cs:linha 98
   em OmniSharp.MSBuild.ProjectManager.LoadOrReloadProject(String projectFilePath, Func`1 loader) na D:\a\1\s\src\OmniSharp.MSBuild\ProjectManager.cs:linha 308

[fail]: OmniSharp.MSBuild.ProjectManager
        Attempted to update project that is not loaded: c:\Users\Vanessa\Desktop\Engenharia de Computação\Estágio\SSTecnologia\2-DotNETCore\ProAgil.API\ProAgil.API.csproj