MappingMongoConverter.writeMapInternal() has thrown a MappingException

We found this prefix in 3 webpages.
MapChildren (2)Typical messages (1)TraceDetailed Map
  1. org.springframework.data.mapping.model.MappingException
    1.   at org.springframework.data.mongodb.core.convert.MappingMongoConverter.writeMapInternal()
  1. MappingException

    $Proxy.save()
    Crashes:2
    Projects:0
    Web Pages:2
    Error Reports:0
    First:10 months ago
    Last:7 months ago
    preview
  2. Dont require Converters for Complex classes that are used as Ids

    First:6 years ago
    Last:2 years ago
    Author:Alexander Bätz
MessageNumber of crashes
Cannot use a complex object as a key value.3
  1. org.springframework.data.mapping.model.MappingException
    1.   at org.springframework.data.mongodb.core.convert.MappingMongoConverter.writeMapInternal()