React app build failing after installing ffmpeg/ffmpeg

**Describe the bug**
Following react example as per https://ffmpegwasm.netlify.app/#demo, the build gives an error.
Compiled with problems:
×
ERROR in ./node_modules/@ffmpeg/ffmpeg/src/browser/defaultOptions.js 6:92-166
Module not found: Error: Can't resolve '/node_modules/@ffmpeg/core/dist/ffmpeg-core.js' in '/Users/anmolvarma/personal/new-things/guitar-chords/kareoke-app/node_modules/@ffmpeg/ffmpeg/src/browser'

**To Reproduce**
Steps to reproduce the behavior:
1. run `npm i @ffmpeg/ffmpeg`
2. Copy code from https://github.com/ffmpegwasm/react-app/blob/master/src/App.js
3. Run `npm start`

**Expected behavior**
The app should build successfully.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Desktop (please complete the following information):**
- OS: MacOs Ventura 13.4
- Browser: chrome and brave
- Version: [Version 1.52.126 Chromium: 114.0.5735.133 (Official Build) (arm64)](https://brave.com/latest/)

**Additional context**
Add any other context about the problem here.