invocation_response::failure does not work with HTTP API Gateway ?

I'm using the HTTP API Gateway, my c++ runtime is built with amazonlinux:latest in a docker image.
All responses that return with invocation_response::failure return an Error 500, Internal Server Error.
```
#include
using namespace aws::lambda_runtime;
static invocation_response my_handler(invocation_request const& req)
{
return invocation_response::failure("error message here"/*error_message*/, "error type here" /*error_type*/);
}

int main()
{
run_handler(my_handler);
return 0;
}
```
However, when I use invocation_response::success, the message arrives on my requesting client, but I ofc. can only send json objects back. (Anyone got an idea why that is ?)

I read everything google found and digged through all kinds of files and aws docus, I could not find out where the problem is. Could someone please give me a hint if the args have to match some specific ones or what I am doing wrong ?
Thanks!

Comece rastreando invocation_response::failure através de run_handler e compare seu comportamento com invocation_response::success quando chamado por meio do HTTP API Gateway. Reproduza o handler de exemplo usando o runtime C++ do Amazon Linux indicado e, em seguida, determine se o HTTP 500 observado é esperado ou identifica uma falha do runtime; o trabalho estará concluído quando o comportamento estiver explicado e verificado.

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