8 files declare their use of FieldException in Zircon Profile 8

BaseFieldOverride.php in core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php

Contains \Drupal\Core\Field\Entity\BaseFieldOverride.

field.purge.inc in core/modules/field/field.purge.inc

Provides support for field data purge after mass deletion.

FieldConfig.php in core/modules/field/src/Entity/FieldConfig.php

Contains \Drupal\field\Entity\FieldConfig.

FieldCrudTest.php in core/modules/field/src/Tests/FieldCrudTest.php

Contains \Drupal\field\Tests\FieldCrudTest.

FieldStorageConfig.php in core/modules/field/src/Entity/FieldStorageConfig.php

Contains \Drupal\field\Entity\FieldStorageConfig.

FieldStorageConfigUpdateForbiddenException.php in core/modules/field/src/FieldStorageConfigUpdateForbiddenException.php

Contains \Drupal\field\FieldStorageConfigUpdateForbiddenException.

FieldStorageCrudTest.php in core/modules/field/src/Tests/FieldStorageCrudTest.php

Contains \Drupal\field\Tests\FieldStorageCrudTest.

SqlContentEntityStorageSchema.php in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php

Contains \Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema.