AutoMapper .net 6.0 not in service

I downloaded automapper to a separate class library. I want to use this automapper in web api. I want to add automapper to services in program.cs, but it gives the following error.

Severity Code Description Project File Line Hide Status Error CS1061
‘IServiceCollection’ does not contain a definition of ‘AddAutoMapper’
and no accessible extension method ‘AddAutoMapper’ was found that
accepts a first argument of type ‘IServiceCollection’ (could be
missing a using directive or assembly reference?) WebApi
C:\Users\batu_\ Desktop\TaskProject\Backend\WebApi\Program.cs 8
Enabled

enter image description here

I downloaded automapper from nuget to map class library

Can’t find AddAutoMapper in program.cs

builder.Services.AddAutoMapper(typeof(MappingProfile));

>Solution :

You need to add a reference to: AutoMapper.Extensions.Microsoft.DependencyInjection