java.util.ConcurrentModificationException: This exception has no message.

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, 2 years ago
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java.util.ConcurrentModificationException:
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
at java.util.HashMap$EntryIterator.next(HashMap.java:834)
at java.util.HashMap$EntryIterator.next(HashMap.java:832)
at java.util.HashMap.putAllForCreate(HashMap.java:435)
at java.util.HashMap.(HashMap.java:225)
at org.slf4j.helpers.BasicMDCAdapter.getCopyOfContextMap(BasicMDCAdapter.java:130)
at com.bizo.logging.SmtpHandler.publish(SmtpHandler.java:65)
at java.util.logging.Logger.log(Logger.java:458)
at java.util.logging.Logger.doLog(Logger.java:480)
at java.util.logging.Logger.log(Logger.java:503)
at java.util.logging.Logger.info(Logger.java:1022)

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