What had happened of this code check?

[hzz780]

@EanCuznaivy

Branch: preview-3-bingo, create from preview-3 Code Change: https://github.com/AElfProject/aelf-boilerplate/commit/d735251b018708418e159a80fd08134fa451cfc9

This change is ok in boilerplate But when i push to test env.

error logs shows

2020-06-12 09:32:16,076 [274] WARN  AElf.Kernel.CodeCheck.Application.CodeCheckService - Contract code did not pass audit. Audit failed for contract: AElf.Contracts.BingoContract.dll
[ObserverProxyValidationResult] Could not find execution observer proxy in contract.
[ResetFieldsValidationResult] <>c type is missing ResetFields method. <>c >  | <>c |

I can not find help information in https://docs.aelf.io/