Uncaught (in promise) Error: Missing web3 instance, make sure to call Moralis.enableWeb3() or Moralis.authenticate()

Moralis General
#1 
const serverUrl = "https://jfgfjgfdhhh.usemoralis.com:2053/server";

const appId = "Y0pO76666666666dshbbbOO)Fjnf";

Moralis.start({ serverUrl, appId });

const web3 = new Web3(Moralis.provider);

I dont know what to do to fix this error