When calling eth_call with empty params it returns 400 code

[Hathoriel]

Hi When calling eth_call with empty params it returns 400 code, can you help please?
For instance balanceOf works well, but name or decimals erc20 method calls don't works.
Before call


Response:

Thank you for any help!

[4xMafole]

Hi, @Hathoriel you can paste code samples here for easy visibility. We prefer seeing source code samples where the error/bug occurs than images 😁.

[Hathoriel]

hi @4xMafole sorry for bad format. Here are code samples:
But when you see just code without variables, you can only expect what is inside :-D

  Future<Web3Client> _getEthClient() async {
    final network = await _networkService.getActiveNetwork();
    var httpClient = Client();
    return Web3Client(network['rpc_url'], httpClient);
  }


  Future<DeployedContract> getContract(String contractAddress) async {
    final abiCode = await rootBundle.loadString('assets/abi/erc20.json');
    final EthereumAddress contractAddr = EthereumAddress.fromHex(contractAddress);
    return DeployedContract(ContractAbi.fromJson(abiCode, 'Datachain'), contractAddr);
  }

  _callRpc(
    String contractAddress,
    String method,
    List<dynamic> params,
  ) async {
    final contract = await getContract(contractAddress);
    final client = await _getEthClient();
    final response = await client.call(contract: contract, function: contract.function(method), params: params);
    return response;
  }

  getDecimals(String contractAddress) async {
    final decimals = await _callRpc(contractAddress, 'decimals', []);
    return decimals[0].toString();
  }