我创建了一个 .NET MAUI Blazor Hybrid and Web App 类型的项目并做了一些修改，启动Windows版本的应用时，弹出了"An unhandled error has occurred"的提示：

An unhandled error has occurred. Reload 

我尝试打开浏览器开发者工具查看详情（没想到Windows原生应用也能开这个工具，应该是因为.NET MAUI底层用了WebView组件），但里面完全找不到任何错误信息：

同时，Visual Studio的Debug输出窗口里也没有任何和错误相关的线索，只有一堆模块加载的日志：

'Myapp.Native.exe' (CoreCLR: DefaultDomain): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Private.CoreLib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Myapp.Native.dll'. Symbols loaded.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'c:\program files\microsoft visual studio\18\community\common7\ide\extensions\microsoft\managedprojectsystem\HotReload\net10.0\Microsoft.Extensions.DotNetDeltaApplier.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Runtime.Loader.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Console.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Collections.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Runtime.InteropServices.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Collections.Concurrent.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.IO.Pipes.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Threading.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Threading.Overlapped.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Security.AccessControl.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Security.Principal.Windows.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Security.Claims.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\WinRT.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.WinUI.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\Microsoft Visual Studio\18\Community\Common7\IDE\PrivateAssemblies\Runtime\Microsoft.VisualStudio.Debugger.Runtime.NetCoreApp.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Memory.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Runtime.CompilerServices.Unsafe.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.ObjectModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Windows.SDK.NET.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Numerics.Vectors.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Private.Uri.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.ComponentModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Security.Cryptography.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.InteractiveExperiences.Projection.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Maui.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Linq.Expressions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Maui.Essentials.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Maui.Controls.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Extensions.DependencyInjection.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Extensions.Hosting.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Extensions.Logging.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Extensions.Configuration.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Extensions.Diagnostics.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'D:\Myapp\Native\bin\Debug\net10.0-windows10.0.19041.0\win-x64\Microsoft.Maui.Controls.Xaml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'Myapp.Native.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\10.0.3\System.Xml.ReaderWriter.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.

备注：内容来源于stack exchange，提问作者Takeshi Tokugawa YD