Type Size mismatch error when trying to subscribe to event

Support
1

Hi there. Trying to get the event back on my Coinflip dapp, signaling whether the user won or lost, but having trouble.

On phase 1 of this project I got this from the transaction receipt, but now in phase two (using an oracle with real randomness) that approach won’t work. So I’m trying to subscribe to the event I set up. Everything else works fine in my dapp, but I keep getting this error back in the browser console when I try to subscribe:

MetaMask - RPC Error: data type size mismatch, expected 32 got 9 
Object { code: -32600, message: "data type size mismatch, expected 32 got 9" }

Have no idea what the heck this is. I can’t find anything searching online. Here is the js code for the subscription:

      contractInstance.methods.bet(choice).send(config)
        .once('transactionHash', function(hash){ })
        .once('receipt', function(receipt){ })
        .on('confirmation', function(confNumber, receipt){ })
        .on('error', function(error){})
        .then(function(){
          var subscription = web3.eth.subscribe('logs', {
              topics: ['WinOrLose']
          }, function(error, result){
              if (error) {console.log(error);}
              else {console.log(result);}
          })
          .on("data", function(txHash){
              console.log(txHash);
          });
        });

Any help would be appreciated.

1 Like
2

Hi @CryptoEatsTheWorld,

I assume that you resolved here: How to capture an event value with web3 js or is this still an issue?

3

Yes, I worked out that issue, thanks.

1 Like