Resolved Graphql Request issue preventing server side gql queries.

server/graphql-client/graphql-client.js

@@ -6,6 +6,11 @@ require("dotenv").config({
     `.env.${process.env.NODE_ENV || "development"}`
   ),
 });
+//New bug introduced with Graphql Request.
+// https://github.com/prisma-labs/graphql-request/issues/206
+const { Headers } = require("cross-fetch");
+
+global.Headers = global.Headers || Headers;
 
 //TODO May need to use a different client that includes caching of resources.
 exports.client = new GraphQLClient(process.env.GRAPHQL_ENDPOINT, {