I have been trying to listen to the event of my smart contract; however, I receive the error.


function(error, event){ 
        $("#instructor").html(event.args.name + ' (' + event.args.age + ' years old)');

I receive the following error

 Error: The current provider doesn't support subscriptions:

Web3.js version is [email protected]

I am well aware of the following solution; however, it doesn't work on my case anyway.

My smart contract

contract Coursetro {
   string fName;
   uint age;
   event Instructor(
    string name,
    uint age 
   function setInstructor(string _fName, uint _age) public {
       fName = _fName;
       age = _age;
       Instructor(_fName, _age);
   function getInstructor() public constant returns (string, uint) {
       return (fName, age);
  • which provider are you using to listen to events. you need to have WebSocket enabled provider to listen to events in Ethereum Commented Nov 19, 2020 at 6:32
  • I just gave an answer to the question.
    – Emrah
    Commented Nov 19, 2020 at 16:35

1 Answer 1


As @myanzik-shresth mentioned, you will need to use WebsocketProvider in order to subscribe to an event if you are using version [email protected]


web3 = new Web3(new Web3.providers.WebsocketProvider('ws://'));


web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'));

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