Hangfire: the type does not contain a method with signature

See more:

C#

.NET

WebForms

asynchronous

Page1.aspx.cs

string strMsgID = //task1 returns a value;
BackgroundJob.Enqueue(() => doLongJob(strMsgID));

public void doLongJob(string strMsgID)
{
    int status = //task2(strMsgID);
    while( status == 2)
    {
        Thread.Sleep(10000);
        status = //task2(strMsgID);
        }
    }
}

Startup.cs

using Hangfire;
using Microsoft.Owin;
using Owin;
[assembly: OwinStartup(typeof(erp.Startup))]
namespace erp
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {

            app.UseHangfireDashboard();

            app.UseHangfireServer();

        }
    }
}

Global.asax.cs

protected void Application_Start(object sender, EventArgs e)
{
    GlobalConfiguration.Configuration.UseStorage(new MySqlStorage("hangfire"));
}

What I have tried:

I have a web application which has Page1.aspx that does task1 and then enqueue task2 to scheduler in fireAndforget manner.

I am using Hangfire and everything is installed and worked correctly but only once when doLongJob() had no parameters (while testing). Then I added a parameter (and I will be adding more). After that I am facing these errors.