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    ava.lang.NullPointerException
        at weblogic.management.console.utils.ConsoleComparator.compare(ConsoleComparator.java:81)
        at java.util.Arrays.mergeSort(Arrays.java:1176)
        at java.util.Arrays.sort(Arrays.java:1123)
        at java.util.Collections.sort(Collections.java:116)
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