Can't Figure Out How to Deploy MERN Stack Application to Render. "Failed" After Build But No Error Given

Question

Previous Heroku user here. I'm forced to try other deployment options due to Heroku removing their Free Tier a few months back. I've deployed a few MERN stack applications to Heroku in the past, but I'm having trouble figuring out how to deploy to render.com. Currently I have my app I'm trying to deploy (here) working perfectly in my local environment, but fails when I try deploying to Render as a Web Service. This is the log I get when trying to deploy:

Jan 18 07:20:13 PM  ==> Cloning from https://github.com/tgoandrex/wheres-waldo...
Jan 18 07:20:14 PM  ==> Checking out commit 3ccd89a93398215a5b71d9b3bd65ac89f461fc15 in branch main
Jan 18 07:20:20 PM  ==> Running build command 'npm build'...
Jan 18 07:20:21 PM  ==> Generating container image from build. This may take a few minutes...
Jan 18 07:21:42 PM  ==> Uploading build...
Jan 18 07:22:11 PM  ==> Build uploaded in 22s
Jan 18 07:22:12 PM  ==> Build successful 
Jan 18 07:22:12 PM  ==> Deploying...

After "Deploying..." it just stays there forever and above that it just says "Failed" with no further information. I cannot find any good documents on MERN stack deployment for Render. Is there a way of making this work or should I try another free option elsewhere that provides better support for MERN stacks?

Settings on Render:

Build Command: npm build
Start Command: npm start

package.json:

{
  "name": "wheres_waldo",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.16.5",
    "@testing-library/react": "^13.4.0",
    "@testing-library/user-event": "^13.5.0",
    "body-parser": "^1.20.1",
    "concurrently": "^7.6.0",
    "cors": "^2.8.5",
    "express": "^4.18.2",
    "mongodb": "^4.13.0",
    "mongoose": "^6.8.2",
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-router-dom": "^6.4.2",
    "react-scripts": "^5.0.1",
    "web-vitals": "^2.1.4"
  },
  "scripts": {
    "start": "concurrently \"react-scripts start\" \"cd server && node server.js\"",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "devDependencies": {
    "dotenv": "^16.0.3"
  }
}