java.lang.NoClassDefFoundError: Could not initialize class com.ibm.ws.ffdc.FFDCFilter

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Update your eclipse.ini file and add this to it:

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Could not initialize class com.ibm.ws.ffdc.FFDCFilter
java.lang.NoClassDefFoundError: Could not initialize class com.ibm.ws.ffdc.FFDCFilter
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.invokeTemplateOnce(SOAPConnectorClient.java:870)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.invokeTemplate(SOAPConnectorClient.java:689)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.invokeTemplate(SOAPConnectorClient.java:679)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.isAlive(SOAPConnectorClient.java:573)
at com.ibm.ws.management.connector.soap.SOAPConnectorClient.invoke(SOAPConnectorClient.java:503)
at com.sun.proxy.$Proxy38.isAlive(Unknown Source)
at com.ibm.ws.management.AdminClientImpl.isAlive(AdminClientImpl.java:103)
at com.ibm.ws.ast.st.jmx.core.internal.WebSphereGenericJmxConnection.isConnectionAlive(WebSphereGenericJmxConnection.java:800)
at com.ibm.ws.ast.st.v8.core.internal.WASServerBehaviour.getWebSphereJmxConnection(WASServerBehaviour.java:1105)
at com.ibm.ws.ast.st.v8.core.internal.WASServerBehaviour.getJmxConnection(WASServerBehaviour.java:1071)
at com.ibm.ws.ast.st.common.core.internal.AbstractWASServerBehaviour.ensureJmxConnection(AbstractWASServerBehaviour.java:546)
at com.ibm.ws.ast.st.v8.core.internal.WASServerBehaviour.start(WASServerBehaviour.java:2895)
at com.ibm.ws.ast.st.v8.core.internal.WASLaunchConfigurationDelegate.launch(WASLaunchConfigurationDelegate.java:258)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:885)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:739)
at org.eclipse.wst.server.core.internal.Server.startImpl2(Server.java:3556)
at org.eclipse.wst.server.core.internal.Server.startImpl(Server.java:3492)

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