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java.lang.NoClassDefFoundError: java/lang/invoke/StringConcatFactory
java.lang.BootstrapMethodError: java.lang.NoClassDefFoundError: java/lang/invoke/StringConcatFactory at org.contikios.cooja.Cooja.loadQuickHelp(Cooja.java:4417)[java] at org.contikios.cooja.Cooja.<init>(Cooja.java:385)[java] at org.contikios.cooja.Cooja$30.run(Cooja.java:3331)[java]