Does this tool really support .net lambdas?

[rigdal]

First time user here, and I have encountered multiple issues with using the AWS SAM CLI tool on Windows 10 in VSCode. I am simply trying to run a Standalone Function from the hello world examples when using sam init.

Initially installed the latest version (1.89 as of writing) from the official AWS Docs page and was running into a Docker issue where it could not find the docker image it was looking for to invoke locally.

initialization failed because of Could not find public.ecr.aws/lambda/dotnet:6-rapid-x86_64 image locally and failed to pull it from docker.

After reverting to 1.88 it looks like its building fine now but encountering another issue.

Invoking testapp::testapp.Function::FunctionHandler (dotnet6)
Local image is up-to-date
Using local image: public.ecr.aws/lambda/dotnet:6-rapid-x86_64.

Mounting C:\Users\AaronRigdon\Documents\GitHub\Clients\Foodbuy\NPC\test-lambda\testapp\.aws-sam\build\helloFromLambdaFunction as /var/task:ro,delegated, inside runtime container
START RequestId: 100adab6-a652-4f34-9d02-3a41fc3be05f Version: $LATEST
2023-06-27T22:10:51.418Z        100adab6-a652-4f34-9d02-3a41fc3be05f    fail    Amazon.Lambda.Serialization.SystemTextJson.JsonSerializerException: Error converting the Lambda event JSON payload to type System.String: 
The JSON value could not be converted to System.String. Path: $ | LineNumber: 0 | BytePositionInLine: 1.
 ---> System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $ | LineNumber: 0 | BytePositionInLine: 1.
 ---> System.InvalidOperationException: Cannot get the value of a token type 'StartObject' as a string.
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Converters.StringConverter.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpan[TValue](ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize[TValue](ReadOnlySpan`1 utf8Json, JsonSerializerOptions options)
   at Amazon.Lambda.Serialization.SystemTextJson.DefaultLambdaJsonSerializer.InternalDeserialize[T](Byte[] utf8Json)
   at Amazon.Lambda.Serialization.SystemTextJson.AbstractLambdaJsonSerializer.Deserialize[T](Stream requestStream)
   --- End of inner exception stack trace ---
   at Amazon.Lambda.Serialization.SystemTextJson.AbstractLambdaJsonSerializer.Deserialize[T](Stream requestStream)
   at lambda_method1(Closure , Stream , ILambdaContext , Stream )
   at Amazon.Lambda.RuntimeSupport.Bootstrap.UserCodeLoader.Invoke(Stream lambdaData, ILambdaContext lambdaContext, Stream outStream) in /src/Repo/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/UserCodeLoader.cs:line 145
   at Amazon.Lambda.RuntimeSupport.HandlerWrapper.<>c__DisplayClass8_0.<GetHandlerWrapper>b__0(InvocationRequest invocation) in /src/Repo/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/HandlerWrapper.cs:line 55  
   at Amazon.Lambda.RuntimeSupport.LambdaBootstrap.InvokeOnceAsync(CancellationToken cancellationToken) in /src/Repo/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/LambdaBootstrap.cs:line 176
{
  "errorType": "JsonSerializerException",
  "errorMessage": "Error converting the Lambda event JSON payload to type System.String: The JSON value could not be converted to System.String. Path: $ | LineNumber: 0 | BytePositionInLine: 1.",
  "stackTrace": [
    "at Amazon.Lambda.Serialization.SystemTextJson.AbstractLambdaJsonSerializer.Deserialize[T](Stream requestStream)",
    "at lambda_method1(Closure , Stream , ILambdaContext , Stream )",
    "at Amazon.Lambda.RuntimeSupport.Bootstrap.UserCodeLoader.Invoke(Stream lambdaData, ILambdaContext lambdaContext, Stream outStream) in /src/Repo/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/UserCodeLoader.cs:line 145",
    "at Amazon.Lambda.RuntimeSupport.HandlerWrapper.<>c__DisplayClass8_0.<GetHandlerWrapper>b__0(InvocationRequest invocation) in /src/Repo/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/HandlerWrapper.cs:line 55",
    "at Amazon.Lambda.RuntimeSupport.LambdaBootstrap.InvokeOnceAsync(CancellationToken cancellationToken) in /src/Repo/Libraries/src/Amazon.Lambda.RuntimeSupport/Bootstrap/LambdaBootstrap.cs:line 176"
  ],
  "cause":   {
    "errorType": "JsonException",
    "errorMessage": "The JSON value could not be converted to System.String. Path: $ | LineNumber: 0 | BytePositionInLine: 1.",
    "stackTrace": [
      "at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)",
      "at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)",
      "at System.Text.Json.JsonSerializer.ReadFromSpan[TValue](ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)",
      "at System.Text.Json.JsonSerializer.Deserialize[TValue](ReadOnlySpan`1 utf8Json, JsonSerializerOptions options)",
      "at Amazon.Lambda.Serialization.SystemTextJson.DefaultLambdaJsonSerializer.InternalDeserialize[T](Byte[] utf8Json)",
      "at Amazon.Lambda.Serialization.SystemTextJson.AbstractLambdaJsonSerializer.Deserialize[T](Stream requestStream)"
    ],
    "cause":     {
      "errorType": "InvalidOperationException",
      "errorMessage": "Cannot get the value of a token type 'StartObject' as a string.",
      "stackTrace": [
        "at System.Text.Json.Utf8JsonReader.GetString()",
        "at System.Text.Json.Serialization.Converters.StringConverter.Read(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options)",
        "at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)",
        "at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)"
      ]
    }
  }
}
END RequestId: 100adab6-a652-4f34-9d02-3a41fc3be05f
REPORT RequestId: 100adab6-a652-4f34-9d02-3a41fc3be05f  Init Duration: 0.09 ms  Duration: 284.68 ms     Billed Duration: 285 ms Memory Size: 256 MB     Max Memory Used: 256 MB

Not a great first-time user experience here.