hi, since updating from 2.4.0 to 2.5.0 we're unable to get our application running on GAE flex. Our instance is live, but not ready - basically the same situation as described in this issue on serverfault.

Our logs show these errors on every request:

output is a bad gateway from Nginx, so the app does not get started:

Simply reverting to 2.4.0 resolves the issue. We're using Node 8.9.4 and we start the debug agent immediately when starting the app like this:

require('@google-cloud/debug-agent').start({
    // debug agent settings
    capture: {maxFrames: 20, maxProperties: 100}
  });

any ideas?