How to fix “Unsupported engine” error when running NPM for NodeJS

So, here is a nasty error. I got the following error while running npm installthrough NPM:

npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: 'react-mongodb-app@1.0.0',
npm WARN EBADENGINE   required: { node: '14.x', npm: '6.x' },
npm WARN EBADENGINE   current: { node: 'v21.7.3', npm: '10.5.0' }
npm WARN EBADENGINE }

Or, it looks like the following.