ranger startup exception

[Hafiz Mujadid]

hi

I have installed ranger and and started it but it is failing. no ui page is
displayed and only catalina.out log file is being generated. In this file
following exception is logged.

Exception in thread "main" java.lang.NoClassDefFoundError:
javax/servlet/ServletException
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Class.java:2615)
        at java.lang.Class.getMethod0(Class.java:2856)
        at java.lang.Class.getMethod(Class.java:1668)
        at
sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
        at
sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletException
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)




Any suggestion?


thanks