java.lang.NoClassDefFoundError: org/apache/commons/lang/UnhandledException

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java.lang.NoClassDefFoundError: org/apache/commons/lang/UnhandledException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)

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