Issue deploying my Node app to GCP (Google Cloud): Cannot find module and version has no instances

Question

Context:

I'm having an issue when I deploy my node app to GCP app engine.

The deployment has worked in the past, but I've not touched the code for a few months.

The deployment doesn't error, but when I click on the GCP url I get a 500 server error.

I noticed that after I deployed my version didn't have any instances and I believe it should of had two instances.

Message:

Error: Server Error The server encountered an error and could not complete your request. Please try again in 30 seconds.

I've taken a look at the logs which show the following:

Tech Stack:

NodeJs, NestJs, Express, GCP, Typescript

Error Message:

Error: Cannot find module '/workspace/dist/main'

Here is some more of the logs:

I'm not sure if theirs some permissions issue in i am that I need to add. I did receive an email about moving my app from Container Registry to Artifact Registry. So I'm not sure if thats effecting it or what I need to do.

Outcome:

Ideally like to understand why the server has a 500 error. The log messages are not helpful.

Dist folder after a nest build command run:

Deployment Steps:

1. I run npm run set-project:staging to select the correct app engine to deploy to.

2. Then I do nest build.

3. Then I do gcloud app deploy.

My app.yaml file:

runtime: nodejs16
env: standard
instance_class: F2

env_variables:
  GOOGLE_NODE_RUN_SCRIPTS: ''

Package json:

{
  "name": "backend-app",
  "version": "0.0.2",
  "description": "",
  "author": "",
  "private": true,
  "license": "UNLICENSED",
  "main": "dist/main.js",
  "scripts": {
    "gcp-build": "",
    "prebuild": "rimraf dist",
    "local-build": "nest build",
    "clean": "gts clean",
    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
    "start": "nest start",
    "start:prod": "node dist/main",
    "start:dev": "nest start --watch",
    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
    "set-project:staging": "gcloud config set project hidden-staging",
    "deploy:staging": "npm run set-project:staging && npm run local-build && gcloud app deploy",
    "deploy:functions:staging": "firebase use staging && firebase deploy --only functions",
    "gcloud-login": "gcloud auth application-default login"
  },
  "engines": {
    "node": "16.x"
  },
  "dependencies": {
    "@google-cloud/storage": "^6.2.0",
    "@google-cloud/text-to-speech": "^4.0.0",
    "@nestjs/cli": "^8.0.0",
    "@nestjs/common": "^8.0.0",
    "@nestjs/core": "^8.0.0",
    "@nestjs/jwt": "^8.0.0",
    "@nestjs/passport": "^8.2.1",
    "@nestjs/platform-express": "^8.0.0",
    "@nestjs/swagger": "^5.2.0",
    "@nestjs/throttler": "^2.0.1",
    "@ntegral/nestjs-sendgrid": "^1.0.0",
    "@sendgrid/mail": "^7.6.1",
    "@types/passport": "^1.0.7",
    "cookie-parser": "^1.4.6",
    "csurf": "^1.11.0",
    "firebase": "^9.6.10",
    "firebase-admin": "^10.0.2",
    "firebase-functions": "^3.18.1",
    "passport": "^0.5.2",
    "passport-firebase-jwt": "^1.2.1",
    "pdf-puppeteer": "^1.1.10",
    "puppeteer": "^15.5.0",
    "raygun": "^0.13.2",
    "reflect-metadata": "^0.1.13",
    "request": "^2.88.2",
    "rimraf": "^3.0.2",
    "rxjs": "^7.2.0",
    "swagger-ui-express": "^4.3.0"
  },
  "devDependencies": {
    "@nestjs/schematics": "^8.0.0",
    "@nestjs/testing": "^8.0.0",
    "@types/cookie-parser": "^1.4.2",
    "@types/express": "^4.17.13",
    "@types/jest": "^27.0.1",
    "@types/node": "^16.0.0",
    "@types/supertest": "^2.0.11",
    "@typescript-eslint/eslint-plugin": "^4.28.2",
    "@typescript-eslint/parser": "^4.28.2",
    "eslint": "^7.30.0",
    "eslint-config-prettier": "^8.3.0",
    "eslint-plugin-prettier": "^3.4.0",
    "jest": "^27.0.6",
    "prettier": "^2.3.2",
    "supertest": "^6.1.3",
    "ts-jest": "^27.0.3",
    "ts-loader": "^9.2.3",
    "ts-node": "^10.0.0",
    "tsconfig-paths": "^3.10.1",
    "typescript": "^4.3.5"
  },
  "jest": {
    "moduleFileExtensions": [
      "js",
      "json",
      "ts"
    ],
    "rootDir": "src",
    "testRegex": ".*\\.spec\\.ts$",
    "transform": {
      "^.+\\.(t|j)s$": "ts-jest"
    },
    "collectCoverageFrom": [
      "**/*.(t|j)s"
    ],
    "coverageDirectory": "../coverage",
    "testEnvironment": "node"
  }
}

project.toml

[[build.env]]
name = "GOOGLE_NODE_RUN_SCRIPTS"
value = ""

Current Error:

Seems to only say 2 files for upload in the terminal?

500 error in browser and no instance in version :

Answer 1

Try the following command to the package json script:

"gcp-build": "nest build"

The documentation states to have gcp-build as an empty string. However, with a nest build we must add nest build inside the empty string.

Original resource from the chat above: https://cloud.google.com/appengine/docs/standard/nodejs/release-notes#April_11_2023

The app.yaml file:

runtime: nodejs16
env: standard
instance_class: F2