I know this isn't directly related to KGraphql, but I'm trying to host my server on ec2. But when I open [public ip]:8080/grahpql, I cannot connect to it. I see a blank page on Firefox. My inboud rules look like this:

I have no experience with EC2

almost def cus of cors, I was using this with ktor and had to define customers headers and whatnot. Whatever framework you are using likely has documentation on how to work with cors

if you are using ktor. You could try this:

install(CORS) { anyHost() }

This is ofcourse not the correct solution. But if that does not fix it, then cors is not the reason.

No luck with configuring CORS in Ktor 😐

Could you share the error you are getting? by opening the chrome inspector(or whatever browser you use 😛) and under the network tab.