Troubleshooting Uno Check

If you run into problems with uno-check, you should generally try the following:

Update the tool to the latest version: dotnet tool update -g uno.check --add-source https://api.nuget.org/v3/index.json
If you are running with .NET 9+, and workloads are causing issues (e.g. missing workloads even when everything seems installed), try running the following command:
```
dotnet workload clean --all
```

This command will clean all workloads for all installed .NET versions. This will allow uno-check to reinstall them properly. If the dotnet workload clean tells that some workloads can't be removed, try using the repair command in the Visual Studio installer as well.

If you encounter build errors such as: error MSB4022: The result "" of evaluating the value "$(MonoTargetsTasksAssemblyPath)" of the "AssemblyFile" attribute in element <UsingTask> is not valid., it may help to run the following command:
```
dotnet workload repair
```

This can resolve issues where uno-check does not surface any problems but builds still fail.

Run with uno-check --force-dotnet to ensure the workload repair/update/install commands run regardless of if uno-check thinks the workload versions look good.
If you encounter the error Unable to load the service index when installing uno-check for a host name not ending by nuget.org, try using the --ignore-failed-sources parameter.
If you still have errors, it may help to run the Clean-Old-DotNet6-Previews.ps1 script to remove old SDK Packs, templates, or otherwise old cached preview files that might be causing the problem. Try running uno-check --force-dotnet again after this step.
If you encounter the message There were one or more problems detected. Please review the errors and correct them and run uno-check again., but if you have done all the previously mentioned steps, try running it with --verbose flag to see where it is failing.
Finally, if you have other problems, run also with --verbose flag and capture the output and add it to a new issue.