RangeError occurs with the released version of my app

[simolus3]

RangeError occurs with the released version of my app

[simolus3]

Huh that's interesting. Do help me investigate this, can you give me the ABI extract for the balanceOf and decimals function?
Also, do you have any chance to see the network requests? It would be interesting to see what was sent / returned when calling these functions.

[Tolga-FNT]

Huh that's interesting. Do help me investigate this, can you give me the ABI extract for the balanceOf and decimals function?
Also, do you have any chance to see the network requests? It would be interesting to see what was sent / returned when calling these functions.

[
	{
		"constant": true,
		"inputs": [],
		"name": "name",
		"outputs": [
			{
				"name": "",
				"type": "string"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "spender",
				"type": "address"
			},
			{
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "approve",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "totalSupply",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "balanceOfZero",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "_from",
				"type": "address"
			},
			{
				"name": "_to",
				"type": "address"
			},
			{
				"name": "_value",
				"type": "uint256"
			}
		],
		"name": "transferFrom",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "decimals",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "spender",
				"type": "address"
			},
			{
				"name": "addedValue",
				"type": "uint256"
			}
		],
		"name": "increaseAllowance",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "owner",
				"type": "address"
			}
		],
		"name": "balanceOf",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [],
		"name": "acceptOwnership",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "getRescueAddr",
		"outputs": [
			{
				"name": "",
				"type": "address"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "lostTokenContract",
				"type": "address"
			},
			{
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "rescueLostTokenByThisTokenOwner",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "addr",
				"type": "address"
			}
		],
		"name": "setRescueAddr",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "owner",
		"outputs": [
			{
				"name": "",
				"type": "address"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "addr",
				"type": "address"
			},
			{
				"name": "value",
				"type": "uint256"
			},
			{
				"name": "doFreeze",
				"type": "bool"
			}
		],
		"name": "distribute",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "symbol",
		"outputs": [
			{
				"name": "",
				"type": "string"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "unfreezeDateTime",
				"type": "uint256"
			}
		],
		"name": "setUnfreezeDateTime",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "addr",
				"type": "address"
			},
			{
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "burn",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "mint",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "spender",
				"type": "address"
			},
			{
				"name": "subtractedValue",
				"type": "uint256"
			}
		],
		"name": "decreaseAllowance",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "_to",
				"type": "address"
			},
			{
				"name": "_value",
				"type": "uint256"
			}
		],
		"name": "transfer",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "getUnfreezeDateTime",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "burnFromOwner",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "target",
				"type": "address"
			},
			{
				"name": "doFreeze",
				"type": "bool"
			}
		],
		"name": "freeze",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "newOwner",
		"outputs": [
			{
				"name": "",
				"type": "address"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "owner",
				"type": "address"
			},
			{
				"name": "spender",
				"type": "address"
			}
		],
		"name": "allowance",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "target",
				"type": "address"
			}
		],
		"name": "isAccountFrozen",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "_unfreezeDateTime",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "_newOwner",
				"type": "address"
			}
		],
		"name": "transferOwnership",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "lostTokenContract",
				"type": "address"
			},
			{
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "rescueLostTokensByOwn",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "constructor"
	},
	{
		"payable": true,
		"stateMutability": "payable",
		"type": "fallback"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": false,
				"name": "",
				"type": "uint256"
			}
		],
		"name": "globalUnfreezeDatetimeModified",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": false,
				"name": "target",
				"type": "address"
			},
			{
				"indexed": false,
				"name": "frozen",
				"type": "bool"
			}
		],
		"name": "FreezeFunds",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"name": "_from",
				"type": "address"
			},
			{
				"indexed": true,
				"name": "_to",
				"type": "address"
			}
		],
		"name": "OwnershipTransferred",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"name": "from",
				"type": "address"
			},
			{
				"indexed": true,
				"name": "to",
				"type": "address"
			},
			{
				"indexed": false,
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "Transfer",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"name": "owner",
				"type": "address"
			},
			{
				"indexed": true,
				"name": "spender",
				"type": "address"
			},
			{
				"indexed": false,
				"name": "value",
				"type": "uint256"
			}
		],
		"name": "Approval",
		"type": "event"
	}
]

"Also, do you have any chance to see the network requests"
Uhm, how should I exactly do this? :)

[simolus3]

I guess the easiest way would be to temporarily add https://pub.dev/packages/http_logger, create a http client like

HttpWithMiddleware httpClient = HttpWithMiddleware.build(middlewares: [
  HttpLogger(logLevel: LogLevel.BODY),
]);

and pass that httpClient to the Web3Client constructor. The requests that contain "method":"eth_call" are interesting here. Be aware that these potentially contain sensitive information (contract address, your ethereum address and the data sent and received from the contract). If you're on a dev or testing network that's fine, but if you're uncomfortable posting them publicly you could also sent them to me via [email protected].

[simolus3]

Sorry, forget about http_logger.
You can write one yourself with

import 'package:http/http.dart';
import 'package:web3dart/web3dart.dart';

class LoggingClient extends BaseClient {
  final Client _inner;

  LoggingClient(this._inner);

  @override
  Future<StreamedResponse> send(BaseRequest request) async {
    if (request is Request) {
      print('sending ${request.url} with ${request.body}');
    } else {
      print('sending ${request.url}');
    }

    final response = await _inner.send(request);
    final read = await Response.fromStream(response);

    print('response:\n${read.body}');

    return StreamedResponse(
        Stream.fromIterable([read.bodyBytes]), response.statusCode);
  }
}

Then, you can create the client with Web3Client(rpcUrl, LoggingClient(Client())), it should log outgoing requests and their responses.

[simolus3]

Thanks for the email. It appears like this was a Dart (compiler?) bug that is fixed in the beta channel of Flutter.

[thelazyindian]

Well, I am having the same issue
How to fix?

[Tolga-FNT]

I can't use both web3dart, http and http_logger because of the versioning issues. See the logs below:

So, because fw depends on both http_logger ^1.0.0 and http ^0.12.0, version solving failed.
pub get failed (1)
exit code 1
[fw] flutter packages get
Running "flutter packages get" in fw...              
Because web3dart >=0.4.2 depends on http ^0.12.0 and fw depends on http ^0.11.3+16, web3dart >=0.4.2 is forbidden.

So, because fw depends on web3dart ^1.0.0-rc.2, version solving failed.
pub get failed (1)
exit code 1
[fw] flutter packages get
Running "flutter packages get" in fw...              
Because http_logger >=1.0.0 depends on http_middleware ^1.0.0 which depends on http ^0.11.3+16, http_logger >=1.0.0 requires http ^0.11.3+16.

So, because fw depends on both http_logger ^1.0.0 and http ^0.12.0+2, version solving failed.
pub get failed (1)
exit code 1

I use the following libraries, but http_logger is making a mess right now. I can't use all these libraries, so what should I do?

web3dart           : ^1.0.0-rc.2
http               : ^0.12.0+2
http_logger        : ^1.0.0

[simolus3]

@thelazyindian Can you open another issue with a simple repro that behaves differently on debug and release builds? It would also be helpful to know which exact Flutter version you're using. Thanks.

[thelazyindian]

Nvm. This error also comes when the contract address is wrong. I messed the contract address earlier but fixed it now and so the error is also fixed. Sorry for incovenience.