Error handling

Currently, we have ResultModel with some error flags there, but we haven't handled it yet. Sees it https://github.com/jasontaylordev/CleanArchitecture/blob/main/src/WebUI/Filters/ApiExceptionFilterAttribute.cs

- Good ref: https://github.com/iayti/CleanArchitecture/blob/master/src/Apps/CleanArchitecture.Api/Filters/ApiExceptionFilterAttribute.cs