java.lang.NoClassDefFoundError: HTTPClient/ProtocolNotSuppException

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java.lang.NoClassDefFoundError: HTTPClient/ProtocolNotSuppException
at oracle.sysman.emd.targetIntg.agent.AgentTargetInstaller.(AgentTargetInstaller.java:235)
at oracle.sysman.emcp.target.TargetManager.getAgentTargetInstaller(TargetManager.java:1008)
at oracle.sysman.emcp.target.TargetManager.getLocalHost(TargetManager.java:1033)
at oracle.sysman.emcp.ParamsManager.getLocalHost(ParamsManager.java:1037)
at oracle.sysman.emcp.ParamsManager.getHost(ParamsManager.java:3020)
at oracle.sysman.emcp.DatabaseChecks.validateUserCredentials(DatabaseChecks.java:1066)
at oracle.sysman.emcp.ParamsManager.validatePassword(ParamsManager.java:3417)
at oracle.sysman.emcp.EMConfigAssistant.promptForData(EMConfigAssistant.java:701)
at oracle.sysman.emcp.EMConfigAssistant.promptForParams(EMConfigAssistant.java:2979)
at oracle.sysman.emcp.EMConfigAssistant.displayWarnsAndPromptParams(EMConfigAssistant.java:3008)
at oracle.sysman.emcp.EMConfigAssistant.getDisplayAndPromptWarnsParms(EMConfigAssistant.java:3033)
at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(EMConfigAssistant.java:1397)
at oracle.sysman.emcp.EMConfigAssistant.statusMain(EMConfigAssistant.java:574)
at oracle.sysman.emcp.EMConfigAssistant.main(EMConfigAssistant.java:522)

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