Как я могу исправить исключение ссылки system.null в моем классе отчетов экстента?

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I am not sure why I am getting one of my variables testlog is null. I am able to initialize and start the test but at the teardown method in my test class its not able to flush the reports and log it because testlog is null.. Any help would be great...

//Here is my ExtentReport class
```
public class ExtentReport
    {
        public static ExtentReports extent;
        public static ExtentTest testlog;
        public static bool testStarted = false;

        public static void StartReport()
        {
            //To obtain the current solution path/project path
            string path = System.Reflection.Assembly.GetCallingAssembly().CodeBase;
            string actualPath = path.Substring(0, path.LastIndexOf("bin"));
            string projectPath = new Uri(actualPath).LocalPath;

            string reportPath = projectPath + "Reports\\" + DateTime.Now.ToString("MM_dd_yyyy_HH_mm_ss") + ".html";

            ExtentHtmlReporter htmlReporter = new ExtentHtmlReporter(reportPath);
            extent = new ExtentReports();
            extent.AttachReporter(htmlReporter);

            //Add QA system info to html report
            extent.AddSystemInfo("Tester", Environment.UserName);
            extent.AddSystemInfo("Environment", ConfigurationManager.AppSettings["TestEnvironment"]);
            extent.AddSystemInfo("MachineName", Environment.MachineName);
        }

        public static void StartExtentTest(string testsToStart)
        {
            testlog = extent.CreateTest(testsToStart);
            testlog.Log(Status.Pass, "Test steps start for test case " + TestContext.CurrentContext.Test.Name);
        }

         public static void LoggingTestStatusExtentReport()
         {
            try
            {
                var status = TestContext.CurrentContext.Result.Outcome.Status;
                var stacktrace = string.Empty + TestContext.CurrentContext.Result.StackTrace + string.Empty;
                var errorMessage = TestContext.CurrentContext.Result.Message;
                Status logstatus;
                switch (status)
                {
                    case TestStatus.Failed:
                        logstatus = Status.Fail;
                        testlog.Log(Status.Fail, "Test steps NOT Completed for Test case " + TestContext.CurrentContext.Test.Name + " ");
                        testlog.Log(Status.Fail, "Test ended with " + Status.Fail + " – " + errorMessage);
                        break;
                    case TestStatus.Skipped:
                        logstatus = Status.Skip;
                        testlog.Log(Status.Skip, "Test ended with " + Status.Skip);
                        break;
                    default:
                        logstatus = Status.Pass;
                        testlog.Log(Status.Pass, "Test steps finished for test case " + TestContext.CurrentContext.Test.Name + " ");
                        testlog.Log(Status.Pass, "Test ended with " + Status.Pass);
                        break;
                }
            }
            catch (Exception e)
            {
                throw e;
            }

         }

        public void TestReportInitialize()
        {
            if (GetType().Name != typeof(BaseCrudHandler).Name)
            {
                if (testStarted == false)
                    ExtentReport.StartReport();
                testStarted = true;
            }
        }

        public void LogReport()
        {
            ExtentReport.LoggingTestStatusExtentReport();
            ExtentReport.extent.Flush();
        }


    }

```

```
//Here is my Test class 
public class ReportTest
{
    static ExtentReport report = new ExtentReport();

        [SetUp]
        public void SetUp()
        {
            //calling the method to start the test
            report.TestReportInitialize();
        }    

     [Test]
     public void GetTest()
  {
     Console.WriteLine("MyTest");
  }


        [TearDown]
        public void EndOfExecution()
        {
            report.LogReport();
        }


}
```

Что я уже пробовал:

Не уверен.. в чем именно заключается причина нулевого исключения?. в переменной testlog :(

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