NullPointerException while runnning selenium

Am getting null NullPointerException when running below code, i am just trying read exel path from properties file but getting error, please help me as tried hard to resolve this problem

login script

   public class Login1 {


    public static Properties props;
    public static WebDriver driver;
    public InputStream propertiesFilePath = this.getClass().getClassLoader()
        .getResourceAsStream("Config.properties");

    public static void main(String [] arg){

     }
    public  void Readproperties() throws IOException {

    props = new Properties();

    props.load(propertiesFilePath);

    }

    public static void  getDriver(){

    System.setProperty("webdriver.chrome.driver",               "C:\\Users\\aroy\\Desktop\\Sele\\chromedriver_win32\\chromedriver.exe");
    driver = new ChromeDriver();

    }


    public static void logintoapp(String acc, String passw){

    driver.findElement(By.xpath("//input[@id='userName']")).sendKeys(acc);
    driver.findElement(By.xpath("//input[@id='password']")).sendKeys(passw);
    driver.findElement(By.xpath("//button[@id='loginBtn']")).click();
    System.out.println("Login SuccessFully");
    }

    }

Tesstcase

            package AtExecution;

            import java.io.IOException;
            import org.testng.annotations.Test;

            import BeoreExecution.Login1;

            public class Testcase extends Login1 {

            public static ExcelLib exel1;



            @Test
            public void login() throws IOException{

             Login1 x = new Login1();
             x.Readproperties();

             exel1 = new ExcelLib(Login1.props.getProperty("TestDataPath"));
             String siteurl = exel1.getCellData("Login_Credentials",    "TestUrl", 2);
             String acc = exel1.getCellData("Login_Credentials", "account", 2);
             String passw=exel1.getCellData("Login_Credentials", "Password", 2);
             Login1.getDriver();
             driver.get(siteurl);
             driver.manage().window().maximize();
             Login1.logintoapp(acc, passw);



             }



                }

here is my log

    [RemoteTestNG] detected TestNG version 6.12.0
     FAILED: login
     java.lang.NullPointerException
     at java.util.Properties$LineReader.readLine(Unknown Source)
     at java.util.Properties.load0(Unknown Source)
     at java.util.Properties.load(Unknown Source)
        at BeoreExecution.Login1.Readproperties(Login1.java:30)
     at AtExecution.Testcase.login(Testcase.java:18)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
at            org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:669)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:877)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1201)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.privateRun(TestRunner.java:776)
at org.testng.TestRunner.run(TestRunner.java:634)

Please help me to solve this

my config file data is

TestDataPath=C:/Users/Testdata.xlsx

and below is my exelsheet data

enter image description here