Created a new project with Mudblazor template, wasm hosted. Clicked build. Clicked on "Fetch Data " page. Headers appear but not the usual table data. I have not made any changes at all, just create and build. Tried with brave and firefox browsers. Tried creating a new normal Blazor app works fine.
crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: '<' is an invalid start of a value. Path: $ | LineNumber: 0 | BytePositionInLine: 0.
System.Text.Json.JsonException: '<' is an invalid start of a value. Path: $ | LineNumber: 0 | BytePositionInLine: 0.
---> System.Text.Json.JsonReaderException: '<' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.
at System.Text.Json.ThrowHelper.ThrowJsonReaderException(Utf8JsonReader& json, ExceptionResource resource, Byte nextByte, ReadOnlySpan`1 bytes)
at System.Text.Json.Utf8JsonReader.ConsumeValue(Byte marker)
at System.Text.Json.Utf8JsonReader.ReadFirstToken(Byte first)
at System.Text.Json.Utf8JsonReader.ReadSingleSegment()
at System.Text.Json.Utf8JsonReader.Read()
at System.Text.Json.Serialization.JsonConverter`1[[MudBlogor.Shared.WeatherForecast[], MudBlogor.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
--- End of inner exception stack trace ---
at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, JsonReaderException ex)
at System.Text.Json.Serialization.JsonConverter`1[[MudBlogor.Shared.WeatherForecast[], MudBlogor.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
at System.Text.Json.JsonSerializer.ReadCore[WeatherForecast[]](JsonConverter jsonConverter, Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
at System.Text.Json.JsonSerializer.ReadCore[WeatherForecast[]](JsonReaderState& readerState, Boolean isFinalBlock, ReadOnlySpan`1 buffer, JsonSerializerOptions options, ReadStack& state, JsonConverter converterBase)
at System.Text.Json.JsonSerializer.ContinueDeserialize[WeatherForecast[]](ReadBufferState& bufferState, JsonReaderState& jsonReaderState, ReadStack& readStack, JsonConverter converter, JsonSerializerOptions options)
at System.Text.Json.JsonSerializer.<ReadAllAsync>d__65`1[[MudBlogor.Shared.WeatherForecast[], MudBlogor.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].MoveNext()
at System.Net.Http.Json.HttpContentJsonExtensions.<ReadFromJsonAsyncCore>d__4`1[[MudBlogor.Shared.WeatherForecast[], MudBlogor.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].MoveNext()
at System.Net.Http.Json.HttpClientJsonExtensions.<GetFromJsonAsyncCore>d__13`1[[MudBlogor.Shared.WeatherForecast[], MudBlogor.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].MoveNext()
at MudBlogor.Client.Pages.FetchData.OnInitializedAsync()
at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState) [blazor.webassembly.js:1:35572](https://localhost:44342/_framework/blazor.webassembly.js)
Firefox can’t establish a connection to the server at wss://localhost:44352/MudBlogor.Client/.