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Are you running your server / project inside a container / containers. I had the same issue as this and ended up doing the following to fix it.

const networkInterface = createNetworkInterface({ uri: process.browser ? 'http://0.0.0.0:1111/graphql' : 'http://my-docker-container-name:8080/graphql' })

I have an internal docker network created for my containers in my docker-compose.yml, which allows the containers to communicate with each other, however the browser communicates to the GQL server on a different URL, causing the issue you described on SSR the getaddrinfo ENOTFOUND, so although it was working client side, on the SSR it would fail.

I am using nextJS framework which gives the ability to detect the browser or SSR, i'm sure you could do the same outside of nextJS.

You can call console.log (and you can add a breakpoint on that line) and return the object explicitly:

In the standard case this.props does not contain a subscribeToMore functionality. It is added in the end of the file at githunt react master.

Did you also add something like:

My problem was that I didn't understand that the resolvers you pass into makeExecutableSchema (from graphql-tools) needs to map all your types to their own resolvers. In other words, every type should have a top-level entry in the resolvers object you pass to makeExecutableSchema.

Here's how I fixed my problem: