Stuck for days - mandatory compliance webhooks

Shopify App Store
1

I am new to the shopify app, and have a 100% and functional app, in the sense of the user - the app talks to my react router which talks to my backend, every bell & whistle does exactly what it is supposed to do.

Then when we were completing the review test, the mandatory compliance webhooks fail. We attempted to test from the command line, and we get a Node React router error.

We have spent DAYS trying to reprogram the backend to get webhooks coded into our server.js, but it constntly fales to load SSR then.

HOW can we get server.js to work with the Node React that is catching these webhooks?
nsole.log(
“:optical_disk: Hey developer :waving_hand:. You can provide a way better UX than this when your app throws errors. Check out Error Boundaries | React Router for more information.”
);
root@proxy1rtml:~/shopify-url-shortener/ittle-shortner# curl https://dev.rtml.pro/test

Unhandled Thrown Response!

404 Not Found

    console.log(
      "💿 Hey developer 👋. You can provide a way better UX than this when your app throws errors. Check out https://reactrouter.com/how-to/error-boundary for more information."

ANY HELP WILL BE GREATLY APPRECIATED!

App:https://admin.shopify.com/?organization_id=186105991&no_redirect=true&redirect=/oauth/redirect_from_developer_dashboard?client_id%3D4f40dc7321440a8879698c81dd627415