When creating a query with an enum as a parameter hibernate fails with the following exception

java.lang.NullPointerException: Cannot invoke "org.hibernate.metamodel.mapping.JdbcMapping.getJdbcValueBinder()" because "jdbcMapping" is null

This is a sample code to reproduce the bug:

Query query = entityManager.createQuery("SELECT t from TestTbl AS t WHERE t.testEnum IS NULL AND :testEnum IS NULL");
query.setParameter("testEnum", TestEnum.VALUE_1);
query.getResultList();

Also I created two repositories for Hibernate 5 and Hibernate 6 which show that this worked in Hibernate 5 but is failing in Hibernate 6:
https://github.com/TheChronicler/hibernate5_enum_test_case/tree/master

https://github.com/TheChronicler/hibernate6_enum_test_case

Note that the exception is only thrown when the parameter is set to a value other than null