selenium webdriver – When i run my appium code throughout run time i get this error “Exception in thread “essential” java.lang.NoClassDefFoundError”?

I’ve written a code to launch my app and click on on the component, the app is launching however after launching when it’s making an attempt to click on, I get an error which I’m not capable of perceive why.

Error

Feb 19, 2019 2:54:42 PM io.appium.java_client.distant.AppiumCommandExecutor$1 lambda$0
INFO: Detected dialect: W3C
Exception in thread “essential” java.lang.NoClassDefFoundError: internet/sf/cglib/proxy/MethodInterceptor
at pageobjects.HomePage.(HomePage.java:12)
at pages.SignUp.essential(SignUp.java:22)
Attributable to: java.lang.ClassNotFoundException: internet.sf.cglib.proxy.MethodInterceptor
at java.internet.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at solar.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 2 extra

That is the category code

package deal pages;

import java.internet.MalformedURLException;
import java.util.concurrent.TimeUnit;


import io.appium.java_client.android.AndroidDriver;
import io.appium.java_client.android.AndroidElement;
import page_objects.Home_page;

public class SignUp extends MobileCap 
{

public static void essential(String[] args) throws MalformedURLException 
{
    // TODO Auto-generated methodology stub

    AndroidDriver driver = Capabilities();
    driver.handle().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

    Home_page h = new Home_page(driver);
    h.SignUp.click on();

}
}