java.lang.NoClassDefFoundError: org/apache/struts/action/ActionServlet

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java.lang.NoClassDefFoundError: org/apache/struts/action/ActionServlet
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at org.apache.cactus.server.AbstractTestCaller.getTestClassFromContextClassLoader(AbstractTestCaller.java:367)
at org.apache.cactus.server.AbstractTestCaller.getTestClassClass(AbstractTestCaller.java:332)
at org.apache.cactus.server.AbstractTestCaller.getTestClassInstance(AbstractTestCaller.java:298)
at org.apache.cactus.server.AbstractTestCaller.doTest(AbstractTestCaller.java:142)

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