Quartz.NET error comes every time I use it
<p>I get an error in this line saying:</p>

<blockquote>
  <p>Cannot implicitly convert type 'System.Threading.Tasks.Task' to 'Quartz.IScheduler'. An explicit conversion exists (are you missing a cast?)   </p>
</blockquote>

<p>How to solve it; I don't understand? Please help!</p>

<p><code>IScheduler scheduler = StdSchedulerFactory.GetDefaultScheduler();</code></p>

<pre><code>   public static void Start()
    {
        try
        {
            //Construct scheduler factory
            //IScheduler scheduler = schedulerFactory.GetScheduler();

           // IScheduler scheduler = StdSchedulerFactory.GetDefaultScheduler();

            IScheduler scheduler = StdSchedulerFactory.GetDefaultScheduler();
            scheduler.Start();

            IJobDetail job = JobBuilder.Create&lt;HelloJob&gt;()
                .WithIdentity("jobName", "jobGroup")
                .Build();

            ITrigger trigger = TriggerBuilder.Create()
                .WithSimpleSchedule(s =&gt; s.WithIntervalInSeconds(60).RepeatForever())
                .StartNow()
                .Build();

            scheduler.ScheduleJob(job, trigger);

           // scheduler.Start();

        }

        catch (SchedulerException se)
        {
            //Console.WriteLine(se);
        }
    }
}

public class HelloJob : IJob
{
    private TBPESContext db = new TBPESContext();
    public void Execute(IJobExecutionContext context)
    {
        var AuthorName = from twitterAccount in db.Twitter_Account
                         from c in twitterAccount.Courses
                         select twitterAccount.Author_Name;

        foreach (var item in AuthorName)
        {
            TweetCrawler.SaveTweets(item);
        }


        throw new NotImplementedException();
    }
}
</code></pre>