404 With Heroku Deployment

[solopreneuur]

Hi everyone. I scaffolded the remix app from shopify. I deployed to Heroku. The issue I am running into is that when I have my app installed onto my shopify admin store, its showing me Heroku: "There's nothing here, yet".
I am getting a 404 

Request URL:

https://smscartai.herokuapp.com/?embedded=XXXXXX&shop=smscartai.myshopify.com&timestamp=XXXX

When i run the shopify app dev and the toml changes to cloudflare for the links, the app runs fine.

[solopreneuur]

THANK YOU