Hi @GabLikesCoffee, in addition to @coelmay’s answer, in case you are using React Router or any other client side routing package, kindly add a _redirects file inside the /public folder like /public/_redirects . After add the contents below in the _redirects file and then redeploy again to see if it works.
/* /index.html 200
The above is stated in the Deployment section at the second link @coelmay posted. However I am specifically stating it here again in case you missed it since the documentation states configuration for client-side routing which might escape or confuse most people reading the documentation.
Thanks.