Cannot Run Tests - java.lang.NullPointerException

Im trying to config appium server and run tests after the Server start i get exception

1st class for the appium server:

package base_class;
public class Start_Appium_Server {
@BeforeTest
public void StartAppiumServer() throws Exception {
AppiumDriverLocalService service;
service = AppiumDriverLocalService.buildService(
new AppiumServiceBuilder()
.usingDriverExecutable(new File(“C:/Appium/node.exe”))
.withAppiumJS(new File(“C:/Appium/node_modules/appium/bin/appium.js”))
.withLogFile(new File(“C:/Appiumlogfile/Appiumlogfiletxt.txt”))
.withIPAddress(“127.0.0.1”)
.usingPort(4725)
);

	service.start();
System.out.println("Thread_Sleep End ");
Thread.sleep(10000);



if(service.isRunning())
{
	System.out.println("service is running");
}
else
{
	System.out.println("service is not running");
}	
	
 }
 
  @Test
  public void Appium_Server_test() throws Exception {
	  System.err.println("Appium server Test");

**i add the @test to verififcation **

2nd class is for android driver capa:
package base_class;

public class Main_Base_Class extends Start_Appium_Server {

  public static AndroidDriver<WebElement> driver = null;

public void beforeSuite() throws IOException, Exception {

    File classpathRoot = new File(System.getProperty("user.dir"));
    File appDir = new File(classpathRoot, "/data/local/tmp");
    File app = new File(appDir, "app-debug.apk");
	 
	DesiredCapabilities cap = new DesiredCapabilities();
	cap.setCapability("appPackage" ,"My package name from appinfo applcation ");
	cap.setCapability("appActivity" ,"My appActivity name from appinfo applcation ");		
	cap.setCapability("platformName",Platform.ANDROID);
  	cap.setCapability("deviceName","**_Device name from adb device command  ");_**
 	cap.setCapability("platformVersion","5.0.1");
    cap.setCapability("app", app.getAbsolutePath());
 	cap.setCapability("noReset", true);
	driver = new AndroidDriver<WebElement>(new URL("http://127.0.0.1:4723/wd/hub"),cap);
	driver.manage().timeouts().implicitlyWait(80, TimeUnit.SECONDS);


	//Application context 
	Set<String> contextNames = ((AppiumDriver<WebElement>) driver).getContextHandles();
	for (String contextName : contextNames) {  // contextName = NEW VALU contextNames
												//contextNames Result for getContextHandles method
	    System.out.println(contextNames);
	}

}

@Test
public void Main_Base_Test() throws Exception {
System.err.println(“Main Base Class”);


Both of the classes run sepratly without any problem
when i try to execute my test from other package i ger exception

package sanity_Test;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

import org.openqa.selenium.WebElement;
import org.testng.annotations.Test;

import base_class.*;

public class Login_test extends Main_Base_Class {

@Test(priority=1)
public void Login_Sanity_User_Details_TestCase() throws Exception {	
		WebElement User_Emailֹ_Text_Area = driver.findElementById("...add my id from uiautomator tool ");
		User_Emailֹ_Text_Area.click();
		User_Emailֹ_Text_Area.clear();
		User_Emailֹ_Text_Area.sendKeys("[email protected]");
		System.out.println( "Email add ");
	}
	
	public void User_Password_Address() {
		WebElement User_Password_Text_Box = driver.findElementById("add my id from uiautomator tool ");
		User_Password_Text_Box.click();
		User_Password_Text_Box.clear();
		User_Password_Text_Box.sendKeys("222222");	
		driver.hideKeyboard();
		System.out.println( "Password add  ");
	}
	public void Login_process() throws Exception {
		WebElement Login_Button = driver.findElementById("add my id from uiautomator tool ");
		Login_Button.click();
		Thread.sleep(2000);
		 System.out.println("Login pass");
	}
	public void Android_Alert_message() {
		WebElement alert_dialogbox = driver.findElementById("add my id from uiautomator tool r");
		if(alert_dialogbox.isDisplayed()){
			WebElement allow_Button = driver.findElementById("add my id from uiautomator tool ");
			allow_Button.click();
		}




		}
 

}

From the log file:
[TestNG] Running:
C:\Users\Ohad.Vaserman\AppData\Local\Temp\testng-eclipse–36183619\testng-customsuite.xml

e[36minfoe[39m: Welcome to Appium v1.4.16 (REV ae6877eff263066b26328d457bd285c0cc62430d)
e[36minfoe[39m: Appium REST http interface listener started on 127.0.0.1:4725
e[36minfoe[39m: [debug] Non-default server args: {“address”:“127.0.0.1”,“port”:4725,“log”:“C:\Appiumlogfile\Appiumlogfiletxt.txt”}
e[36minfoe[39m: Console LogLevel: debug
e[36minfoe[39m: File LogLevel: debug
e[36minfoe[39m: e[37m–>e[39m e[37mGETe[39m e[37m/wd/hub/statuse[39m e[90m{}e[39m
e[36minfoe[39m: [debug] Responding to client with success: {“status”:0,“value”:{“build”:{“version”:“1.4.16”,“revision”:“ae6877eff263066b26328d457bd285c0cc62430d”}}}
Thread_Sleep End
e[36minfoe[39m: e[37m<-- GET /wd/hub/status e[39me[32m200e[39me[90m 15.357 ms - 105e[39m e[90m{“status”:0,“value”:{“build”:{“version”:“1.4.16”,“revision”:“ae6877eff263066b26328d457bd285c0cc62430d”}}}e[39m
e[36minfoe[39m: e[37m–>e[39m e[37mGETe[39m e[37m/wd/hub/statuse[39m e[90m{}e[39m
e[36minfoe[39m: [debug] Responding to client with success: {“status”:0,“value”:{“build”:{“version”:“1.4.16”,“revision”:“ae6877eff263066b26328d457bd285c0cc62430d”}}}
e[36minfoe[39m: e[37m<-- GET /wd/hub/status e[39me[32mservice is running
200e[39me[90m 9.050 ms - 105e[39m e[90m{“status”:0,“value”:{“build”:{“version”:“1.4.16”,“revision”:“ae6877eff263066b26328d457bd285c0cc62430d”}}}e[39m
Main Base Class
Appium server Test
PASSED: Main_Base_Test
PASSED: Appium_Server_test
FAILED: Login_Sanity_User_Details_TestCase
java.lang.NullPointerException
at sanity_Test.Login_test.Login_Sanity_User_Details_TestCase(Login_test.java:20)
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:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:816)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1124)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:774)
at org.testng.TestRunner.run(TestRunner.java:624)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:359)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:354)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:312)
at org.testng.SuiteRunner.run(SuiteRunner.java:261)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1215)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
at org.testng.TestNG.run(TestNG.java:1048)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:126)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:137)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:58)

===============================================
Default test
Tests run: 3, Failures: 1, Skips: 0

===============================================
Default suite
Total tests run: 3, Failures: 1, Skips: 0

[TestNG] Time taken by org.testng.reporters.JUnitReportReporter@f438e: 7 ms
[TestNG] Time taken by [FailedReporter passed=0 failed=0 skipped=0]: 9 ms
[TestNG] Time taken by org.testng.reporters.EmailableReporter2@163425a: 5 ms
[TestNG] Time taken by org.testng.reporters.XMLReporter@643faf: 8 ms
[TestNG] Time taken by org.testng.reporters.jq.Main@75222b: 42 ms
[TestNG] Time taken by org.testng.reporters.SuiteHTMLReporter@171769e: 32 ms

selenium latest version 3.5.2 throwing NullPointerExpection for all WebElements.
I try to resolve this issue in my whole day, then I just downgrade the selenium version with 3.4.0, Now its working. Could you please guide me why the selenium latest version is not supporting the WebElements with the appium?

I tried all elements with click(), clear(), sendkeys() and getText(), getAttribute() etc.

Please refer below exception log:

java.lang.NullPointerException
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:275)
at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:99)
at com.shineSauceLabs.config.BaseClass.existingUserLogin(BaseClass.java:198)
at com.shineSauceLabs.config.CommonMethods.Login_TogetResume(CommonMethods.java:888)
at com.shineSauceLabs.Main.TestShineApp_GetResume.test2_goto_ShineCandApp_Login_RegisteredUser(TestShineApp_GetResume.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:661)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:869)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1193)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:126)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.privateRun(TestRunner.java:744)
at org.testng.TestRunner.run(TestRunner.java:602)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:380)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:375)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340)
at org.testng.SuiteRunner.run(SuiteRunner.java:289)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1301)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1226)
at org.testng.TestNG.runSuites(TestNG.java:1144)
at org.testng.TestNG.run(TestNG.java:1115)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:230)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:76)