Cannot load MvcJsonMvcCoreBuilderExtensions' from assembly 'Microsoft.AspNetCore.Mvc.Formatters.Json, Version=6.0.0.0

[ValentinMil]

Hi,

We have recently updated from .Net Core 2.2 to .Net Core 6.0 and we are getting the error below.
We were using "Quartz" Version="3.0.7". We have tried also updating to "Quartz" Version="3.5.0" but that did not fix the issue.
Does anyone know if there is a fix for this?
Thank you!

System.TypeLoadException: 'Could not load type 'Microsoft.Extensions.DependencyInjection.MvcJsonMvcCoreBuilderExtensions' from assembly 'Microsoft.AspNetCore.Mvc.Formatters.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'.'

Stack Trace:
at Quartzmin.ApplicationBuilderExtensions.AddQuartzmin(IServiceCollection services)
at Microsoft.AspNetCore.Hosting.WebHostBuilder.<>c__DisplayClass10_0.b__0(WebHostBuilderContext _, IServiceCollection services)
at Microsoft.AspNetCore.Hosting.WebHostBuilder.BuildCommonServices(AggregateException& hostingStartupErrors)
at Microsoft.AspNetCore.Hosting.WebHostBuilder.Build()
at Quartzmin.SelfHost.QuartzminPlugin.d__23.MoveNext()
at Quartz.Core.QuartzScheduler.d__174.MoveNext()
at Quartz.Core.QuartzScheduler.d__68.MoveNext()

[Jetro223]

Hi @ValentinMil ,

I have the same problem - did you find a solution?

[dtila]

Same for .NET 7. From what I see the problem resides the fact this package is referenced but no longer supported

https://www.nuget.org/packages/Microsoft.AspNetCore.Mvc.Formatters.Json/2.2.0?_src=template

[dtila]

The project looks dead. Many PR ready and no code changed since years.

This project should be downgraded #46