Signin methods working with no errors.

client/src/graphql/client.js

@@ -26,8 +26,14 @@ const authLink = setContext((_, { headers }) => {
   }
 });
 
+const middlewares = [];
+if (process.env.NODE_ENV === "development") {
+  middlewares.push(apolloLogger);
+}
+middlewares.push(authLink.concat(httpLink));
+
 export const client = new ApolloClient({
-  link: authLink.concat(httpLink),
+  link: ApolloLink.from(middlewares),
   cache: new InMemoryCache({ addTypename: false }),
   typeDefs,
   resolvers