I can't subscribe to event listener with Topos

[yehia67]

Hello!
I am trying to add an event listener to my oracle.

contract.on("eventName",callbackAction)

reference
It works fine with Ethereum mainnet and Polygon Mumbai, but once I set the topos testnet URL
https://rpc.topos-subnet.testnet-1.topos.technology
I got this error

@TODO Error: could not coalesce error (error={ "code": -32600, "message": "filter not found" }, payload={ "id": 593, "jsonrpc": "2.0", "method": "eth_getFilterChanges", "params": [ "02e9cb9c-d994-43a0-9797-5a7cb38bd149" ] }, code=UNKNOWN_ERROR, version=6.8.0)
   at makeError (/Users/yehiatarek/Documents/projects/solidity/data-feeder/data-feeder-oracle/node_modules/ethers/src.ts/utils/errors.ts:694:21)
   at JsonRpcProvider.getRpcError (/Users/yehiatarek/Documents/projects/solidity/data-feeder/data-feeder-oracle/node_modules/ethers/src.ts/providers/provider-jsonrpc.ts:976:25)
   at /Users/yehiatarek/Documents/projects/solidity/data-feeder/data-feeder-oracle/node_modules/ethers/src.ts/providers/provider-jsonrpc.ts:526:45
   at processTicksAndRejections (node:internal/process/task_queues:95:5) {
 code: 'UNKNOWN_ERROR',
 error: { code: -32600, message: 'filter not found' },
 payload: {
   method: 'eth_getFilterChanges',
   params: [ '02e9cb9c-d994-43a0-9797-5a7cb38bd149' ],
   id: 593,
   jsonrpc: '2.0'
 },
 shortMessage: 'could not coalesce error'

I didn't find a lot of resources, but Chainstack had an article talking about this issue.

Thanks!

[yehia67]

The smart contract address and event ABI, just in case
smart contract address deployed on topos tetsnet: 0x229D068d763018B92E25107A49D61882eEa48898

	{
			"anonymous": false,
			"inputs": [
				{
					"indexed": true,
					"internalType": "uint256",
					"name": "id",
					"type": "uint256"
				},
				{
					"indexed": true,
					"internalType": "address",
					"name": "caller",
					"type": "address"
				}
			],
			"name": "OracleRequested",
			"type": "event"
		},

[sebastiendan]

Hey @yehia67, I tried to reproduce your problem locally with the following, but didn't get any error.
Can you tell me more whether we need the event to fire to get the error? Can you try yourself with this code?

import { Contract, providers } from 'ethers'

import contractJson from './test.json'

const main = async function () {
  const provider = new providers.JsonRpcProvider(
    'https://rpc.topos-subnet.testnet-1.topos.technology'
  )
  const contract = new Contract(
    '0x229D068d763018B92E25107A49D61882eEa48898',
    contractJson.abi,
    provider
  )

  contract.on('OracleRequested', () => {})
}

main()

{
  "abi": [
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "internalType": "uint256",
          "name": "id",
          "type": "uint256"
        },
        {
          "indexed": true,
          "internalType": "address",
          "name": "caller",
          "type": "address"
        }
      ],
      "name": "OracleRequested",
      "type": "event"
    }
  ]
}

[yehia67]

Hello @sebastiendan,
Which etherjs version are you using?

[yehia67]

Thank you for returning quickly to me,
I still have the same issue I pushed your code on github https://github.com/yehia67/topos-event-filter-poc please check maybe it is Etherjs version

[yehia67]

@sebastiendan okay, confirmed it works with version [email protected]

[sebastiendan]

We're still using 5.7.0 internally with our apps FYI, and I plan to look at v6's compatibility.

[yehia67]

Sounds goood thank you🙏🏻