in chime-sdk-signaling-cpp/src/websocket/libwebsockets_websocket.cc [278:283]
void LibwebsocketsWebsocket::HandleError(const std::string& error_description) {
lwsl_err("%s", error_description.c_str());
WebsocketErrorStatus error_status;
error_status.description = error_description;
observer_->OnWebsocketError(error_status);
}