Unhandled Exception: Bad state: No element

[zhbh]

hi,@ltfschoen. When I debug interface getAccountLockedClaimsApprovedOfMXCAmountFromDataHighwayMXCMiningContract, it reports one exception, which it ran its code.

and My abiCode is here.

Flutter Excetpion:
`E/flutter (11893): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Bad state: No element

E/flutter (11893): #0 ListMixin.singleWhere (dart:collection/list.dart:185:5)

E/flutter (11893): #1 DeployedContract.event
package:web3dart/…/contracts/deployed_contract.dart:42

E/flutter (11893): #2 EthereumApiMiningMXC.getAccountLockedClaimsApprovedOfMXCAmountFromDataHighwayMXCMiningContract
package:polka_wallet/…/ethereumApi/apiMiningMXC.dart:421

E/flutter (11893):

E/flutter (11893): #3 Ethereum.fetchMXCLockedClaimsApproved
package:polka_wallet/…/ethereumApi/api.dart:68

E/flutter (11893):

E/flutter (11893): #4 Ethereum.init
package:polka_wallet/…/ethereumApi/api.dart:40

E/flutter (11893):

E/flutter (11893): #5 _WalletAppState._initStore
package:polka_wallet/app.dart:104

E/flutter (11893): #6 _asyncThenWrapperHelper. (dart:async-patch/async_patch.dart:73:64)

E/flutter (11893): #7 _rootRunUnary (dart:async/zone.dart:1134:38)

E/flutter (11893): #8 _CustomZone.runUnary (dart:async/zone.dart:1031:19)

E/flutter (11893): #9 _FutureListener.handleValue (dart:async/future_impl.dart:139:18)

E/flutter (11893): #10 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)

E/flutter (11893): polkawallet-io#11 Future._propagateToListeners (dart:async/future_impl.dart:709:32)

E/flutter (11893): polkawallet-io#12 Future._completeWithValue (dart:async/future_impl.dart:524:5)

E/flutter (11893): polkawallet-io#13 _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:32:15)
`

It causes that I can not get the right result.

[ltfschoen]

I've in the process of updating the smart contract here DataHighway-DHX/mining#11 and trying to get it to integrate with the app.

[ltfschoen]

@zhbh could you please try using the latest .env that i provided for you to use in WeChat, along with the latest commit in the develop_sam branch and see if we can close this issue?