(web3.eth.getBlockNumber ()). Then ((result) = > {

 console.log("Node " + index + " : " + result);
 // alert("");
 resolve(new Web3(new Web3.providers.HttpProvider(element)));

}, (err) = > {

        // alert("");
     resolve(new Web3(new Web3.providers.HttpProvider(element)));
    });-sharp-sharp-sharp 

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?