5 files declare their use of FieldException

BaseFieldOverride.php in core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php
EntityDefinitionUpdateTest.php in core/tests/Drupal/KernelTests/Core/Entity/EntityDefinitionUpdateTest.php
EntityReferenceFieldTest.php in core/tests/Drupal/KernelTests/Core/Entity/EntityReferenceFieldTest.php
EntityReferenceItem.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
SqlContentEntityStorageSchema.php in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php

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