POST to Spring/Hibernate backend with Postgres - postgresql

Question

I'm trying to send this JSON to my Java backend
{
"title": "TITOLO",
"description": "DESCRIZIONE",
"mediaType": "MEDIATYPE"
}
but for some reasons, I cannot write it correctly to my DB. Some teammates can do it without problems but I get this error from Postman:
{
"timestamp": 1526753419760,
"status": 500,
"error": "Internal Server Error",
"message": "Type definition error: [simple type, class isssr.ticketsystem.entity.Ticket]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `isssr.ticketsystem.entity.Ticket` (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)\n at [Source: (PushbackInputStream); line: 2, column: 2]",
"path": "/ticketsystem/ticket"
}
I wrote on their local DB without problems but they cannot do the same to mine.
Why this?
My OS is MacOS X High Sierra 10.13.4, using as IDE Intellij IDEA.
UPDATE
Problem was Java 10.
With a downgrade to Java 8, all works fine.