java.lang.IllegalArgumentException: fields stored in the db can't start with '$' (Bad Key: '$cglib_prop_propertyName')

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    • java.lang.IllegalArgumentException: fields stored in the db can't start with '$' (Bad Key: '$cglib_prop_propertyName') at com.mongodb.DBCollection.validateKey(DBCollection.java:1450) at com.mongodb.DBCollection._checkKeys(DBCollection.java:1410) at com.mongodb.DBCollection._checkObject(DBCollection.java:1397) at com.mongodb.DBCollection.save(DBCollection.java:800) at com.mongodb.DBCollection.save(DBCollection.java:786)

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