I started to experience this issue on Oct 4, 2018 at around 7:40 PM EDT.

In GCP Stack Driver logging, I am getting the following error message from my node.js app deployed on Google App Engine Standard for Node.

@google-cloud/trace-agent ERROR TraceApi#createChildSpan: [[email protected]:src/client.js] Creating phantom child span [grpc:/google.logging.v2.LoggingServiceV2/WriteLogEntries] because root span [/v1/dialogflow] was already closed.

Note that the traces are still working as expected and I am able to use the trace ID that is generated for the incoming request to GAE to filter all log entries. The only problem is that the trace module is reporting the error above.

Here is my index.ts file, using ES6 on Node 8.

if (process.env.NODE_ENV === "production") {
    require("@google-cloud/trace-agent").start({
        clsMechanism: "async-listener",
    });
} else {
    require("longjohn");
}
require("./app");

I believe the integration with Google App Engine has an issue.