JsonResult with JsonSerializerSettings throws exception in .NET Core 3.1 / Azure Functions v3

Hi All ,
I refered to this issue : https://github.com/Azure/azure-functions-host/issues/5376

But I still cannot solve it . My Azure function works fine locally but it gives following error when I deploy on Azure Portal using Azure pipeline .
Method not found: 'Void Microsoft.AspNetCore.Mvc.JsonResult..ctor

Function App version: 3.0
Function App runtime: .Net Core 3.1

Hosted info:
Runtime: 3.0.15193.0 (~3)
Location: West Europe
Platform: App Service Plan (Y1: 0)
OS: Windows

I have added reference to nuget Microsoft.AspNetCore.Mvc.NewtonsoftJson and set FUNCTIONS_V2_COMPATIBILITY_MODE as true.
This was working fine when I used Azure function v2 and .net core 2.1 .But stopped working when I upgraded it.
Can you please help what can be wrong ?

With Regards,
Nikhil Rai

No repository file or test is named. Start by reproducing the JsonResult constructor failure with Microsoft.AspNetCore.Mvc.NewtonsoftJson under Azure Functions v3 and .NET Core 3.1, then compare deployed dependencies with the local environment; done requires a confirmed compatible configuration or host fix.

Written by the indexing model from the issue text.