Hi David,
Error Reporting is supported by the Node.js App Engine standard runtime, we will fix our docs.
However, Error Reporting does not catch all errors (it only catches exceptions), you should be also looking at your logs.
Can you look at your application output in your logs? (Open Stackdriver Logging from the left nav)
Can you share here your package.json? I'd like to help you understand what could fix the issue
We have many customers using Nuxtjs on App Engine standard, I personally made sure I was able to deploy a Nuxtjs app in the past
Steren
Product Manager
App Engine