Fix import path

Author: FreePhoenix888

client.tsx

@@ -1,5 +1,5 @@
 import { HttpLink, InMemoryCache, ApolloClient } from '@apollo/client';
-import { getMainDefinition } from '@apollo/client/utilities';
+import { getMainDefinition } from '@apollo/client/utilities/index.js';
 import { ApolloLink, concat, split } from 'apollo-link';
 import { WebSocketLink } from 'apollo-link-ws';
 import fetch from 'node-fetch';