I can see that the first LazyInitializationException is coming from the below "Loaded org.hibernate.collection.internal.AbstractPersistentCollection$DelayedOperation from file:/T:/External/hibernate/5.1.2/hibernate-core-5.1.2.Final.jar"

*org.hibernate.collection.internal.AbstractPersistentCollection$LazyInitializationWork from file:/T:/External/hibernate/5.1.2/hibernate-core-5.1.2.Final.jar]
[Loaded org.hibernate.LazyInitializationException from file:/T:/External/hibernate/5.1.2/hibernate-core-5.1.2.Final.jar]
[Loaded org.hibernate.collection.internal.AbstractPersistentCollection$DelayedOperation from file:/T:/External/hibernate/5.1.2/hibernate-core-5.1.2.Final.jar]

*
And then the Nullpointer exceptionis coming from the below "org.hibernate.internal.util.collections.ConcurrentReferenceHashMap$Values from file:/T:/External/hibernate/5.1.2/hibernate-core-5.1.2.Final.jar"

[Loaded org.hibernate.loader.plan.exec.process.internal.HydratedEntityRegistration from file:/T:/External/hibernate/5.1.2/hibernate-core-5.1.2.Final.jar]
java.lang.NullPointerException
[Loaded org.hibernate.internal.util.collections.ConcurrentReferenceHashMap$Values from file:/T:/External/hibernate/5.1.2/hibernate-core-5.1.2.Final.jar]