'What is the cause of FluentValidation Method Not Found exception?
I've got a Domain Driven Design solution and for some reason, I'm getting this exception at RunTime when the API call is made through GateWay:
One or more errors occurred. (Method not found: 'Void FluentValidation.AbstractValidator`1.When(System.Func`2<!0,Boolean>, System.Action)'.)
The error occurs as below:
I have solution like this:
The main 4 project I'm focusing on right now are:
- Core.Model
- Account.Api
- Service.Api.Gateway
- Web.ClientSite
Web.ClientSite makes request to Service.Api.Gateway which then calls Account.Api.
Note that Core.Model is referenced everywhere
VERY IMPORTANT: If I remove the reference of FluentValidation from Core.Model, the exception disappears.
I'm hoping these information is enough. Why do you think I'm getting this exception and how can I eliminate.
Solution 1:[1]
I got similar exception:
System.MissingMethodException : Method not found: 'FluentValidation.AssemblyScanner FluentValidation.AssemblyScanner.FindValidatorsInAssembly(System.Reflection.Assembly)'
In my case I needed to upgrade the ediatR.Extensions.Microsoft.DependencyInjection and MediatR.Extensions.FluentValidation.AspNetCore packages as well to fix the issue.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Maarten Kieft |