 runtime errors, for example, when null pointer exceptions occur in C++ or the panic function is called in Go or Rust. While Envoy error messages did not previously include anything about the cause, they now show the trace which you can use to debug your program:</p><pre><code class=language-plain data-expandlinks=true data-repo=istio>Function: proxy_on_request_headers failed: Uncaught RuntimeError: unreachable
Proxy-Wasm plugin in-VM backtrace:
  0:  0xdbd - runtime._panic
  1:  0x103ab - main.anotherCalcu