Uno: Failed to download the mono-wasm SDK

[chrisevans9629]

Current behavior

When I build, I get this error:

3>Target BuildDist:
3>  SDK: mono-wasm-a163e05d265
3>  SDK Path: C:\Users\cevans\AppData\Local\Temp\mono-wasm-a163e05d265
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018: The "UnoInstallSDKTask_v0858f93d42fc4b4c63c71084fb144d06917ac514" task failed unexpectedly.
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018: System.InvalidOperationException: Failed to download the mono-wasm SDK at https://unowasmbootstrap.blob.core.windows.net/runtime/mono-wasm-a163e05d265.zip, System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\packager'.
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at System.IO.FileSystemEnumerableIterator`1.CommonInit()
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at System.IO.FileSystemEnumerableIterator`1..ctor(String path, String originalUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler`1 resultHandler, Boolean checkHost)
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at System.IO.Directory.EnumerateFiles(String path)
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at Uno.Wasm.Bootstrap.UnoInstallSDKTask_v0858f93d42fc4b4c63c71084fb144d06917ac514.InstallSdk() in D:\a\1\s\src\Uno.Wasm.Bootstrap\UnoInstallSDKTask.cs:line 50
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at Uno.Wasm.Bootstrap.UnoInstallSDKTask_v0858f93d42fc4b4c63c71084fb144d06917ac514.InstallSdk() in D:\a\1\s\src\Uno.Wasm.Bootstrap\UnoInstallSDKTask.cs:line 132
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at Uno.Wasm.Bootstrap.UnoInstallSDKTask_v0858f93d42fc4b4c63c71084fb144d06917ac514.Execute() in D:\a\1\s\src\Uno.Wasm.Bootstrap\UnoInstallSDKTask.cs:line 43
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
3>  C:\Users\cevans\.nuget\packages\uno.wasm.bootstrap\1.1.0-dev.395\build\Uno.Wasm.Bootstrap.targets(116,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()
3>Done building target "BuildDist" in project "Evans.XamlTemplates.Wasm.csproj" -- FAILED.

This build error occurs when I upgrade from Xamarin.Forms 3.5.0.129452 to 4.2.0.910310

Expected behavior

The project should build

How to reproduce it (as minimally and precisely as possible)

You can see a sample of the error here:
https://github.com/chrisevans9629/Evans.XamlTemplates/tree/updateXamarinForms

Environment

Nuget Package:

Package Version(s):

Affected platform(s):

• [ ] iOS
• [ ] Android
• [x] WebAssembly
• [x] WebAssembly renderers for Xamarin.Forms
• [ ] macOS
• [ ] Windows
• [x] Build tasks
• [ ] Solution Templates

Visual Studio:

• [ ] 2017 (version: )
• [x] 2019 (version: 16.4.2)
• [ ] for Mac (version: )

Relevant plugins:

• [ ] Resharper (version: )

Anything else we need to know?

[chrisevans9629]

This actually seems to occur irregardless of Xamarin.Forms version. It will still allow you to run, but you get the following error:

InvalidOperationException: The SPA default page middleware could not return the default page '/index.html' because it was not found, and no other middleware handled the request.
Microsoft.AspNetCore.SpaServices.SpaDefaultPageMiddleware+<>c__DisplayClass0_0.<Attach>b__1(HttpContext context, Func<Task> next)
Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Builder.Extensions.MapWhenMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

[jeromelaban]

Hi @chrisevans9629, try using the latest stable version of the Uno.Wasm.Bootstrapper package (1.0.10) and let us know if that helps.

[chrisevans9629]

Looks like that worked.

The Labels and Editor are not rendering correctly:

This is what it should look like (UWP)

It looks like the editor is not filling to the parent control (left) and the labels are not respecting my newlines/returns. My guess is that the labels are rendered as

and not <pre>test</pre>

Should I submit this as another issue?

[jeromelaban]

Indeed, that's not right. Yes, please open another issue with a sample if you can. Thanks !