谢谢帮忙看下这是什么原因

Question

Exception in thread "main" java.lang.NoClassDefFoundError: org/testng/remote/RemoteArgs

at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:119)

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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

Caused by: java.lang.ClassNotFoundException: org.testng.remote.RemoteArgs

at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 6 more