1. 确保已安装AutoMapper NuGet程序包，并在项目中引用它。
2. 确保在需要映射的类之间创建了映射配置。例如：

public class Source
{
    public int Id { get; set; }
    public string Name { get; set; }
}

public class Destination
{
    public int Id { get; set; }
    public string Name { get; set; }
}

public class MappingProfile : Profile
{
    public MappingProfile()
    {
        CreateMap();
    }
}

3. 将映射配置添加到AutoMapper服务中。例如：

services.AddAutoMapper(typeof(MappingProfile));

4. 确保在Swagger中正确配置了API消费者。请检查如下示例配置：

services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });
    c.AddSecurityDefinition("ApiKey", new OpenApiSecurityScheme
    {
        In = ParameterLocation.Header,
        Description = "Please enter your Unique ApiKey Here!",
        Name = "Authorization",
        Type = SecuritySchemeType.ApiKey
    });
    c.AddSecurityRequirement(new OpenApiSecurityRequirement
    {
        {
            new OpenApiSecurityScheme
            {
                Reference = new OpenApiReference
                {
                    Type = ReferenceType.SecurityScheme,
                    Id = "ApiKey"
                }
            },
            new string[] {}
        }
    });
    c.EnableAnnotations();
    c.IncludeXmlComments("MyApi.xml");
    c.IncludeXmlComments("MyExternalApi.xml");
});

5. 如果仍然存在问题，请确保可以通过调用API终结点验证是否可以成功获取响应，并确保返回的数据与模型匹配。