### Relevant Articles: - [Hibernate could not initialize proxy – no Session](https://www.baeldung.com/hibernate-initialize-proxy-exception) - [Hibernate Error “No Persistence Provider for EntityManager”](https://www.baeldung.com/hibernate-no-persistence-provider) - [TransactionRequiredException Error](https://www.baeldung.com/jpa-transaction-required-exception) - [Hibernate’s “Object References an Unsaved Transient Instance” Error](https://www.baeldung.com/hibernate-unsaved-transient-instance-error) - [EntityNotFoundException in Hibernate](https://www.baeldung.com/hibernate-entitynotfoundexception) - [Hibernate’s “Not-Null Property References a Null or Transient Value” Error](https://www.baeldung.com/hibernate-not-null-error) - [Hibernate's “Detached Entity Passed to Persist” Error](https://www.baeldung.com/hibernate-detached-entity-passed-to-persist)