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  • Does this answer your question? What is a NullPointerException, and how do I fix it?
    – Jens
    Commented Aug 12, 2022 at 9:18
  • Are there more informations in the stacktrace?
    – Jens
    Commented Aug 12, 2022 at 9:19
  • full stack trace : textdoc.co/kuysVq3tBTdX48GJ Commented Aug 12, 2022 at 9:26
  • here is the object in db that fails to serialize: 109,a11004d9-bf9d-4c44-8b82-dee551774daa, CREATE,{"id":200,"name":"xxxx","type":"xxxx"},false,2022-08-12 10:44:36.867000,2022-08-12 10:44:36.867000 Commented Aug 12, 2022 at 9:27
  • Which dbms do you use? is the column declared as json in the database?
    – Jens
    Commented Aug 12, 2022 at 9:31