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java.lang.NoClassDefFoundError: com/mongodb/util/ThreadUtil at com.mongodb.DBPort._open(DBPort.java:222) at com.mongodb.DBPort.go(DBPort.java:85) at com.mongodb.DBPort.go(DBPort.java:66) at com.mongodb.DBPort.call(DBPort.java:56) at com.mongodb.DBTCPConnector.call(DBTCPConnector.java:211) at com.mongodb.DBApiLayer$MyCollection.__find(DBApiLayer.java:284) at com.mongodb.DBCursor._check(DBCursor.java:297) at com.mongodb.DBCursor._hasNext(DBCursor.java:420) at com.mongodb.DBCursor.hasNext(DBCursor.java:445)