18 files declare their use of PluginNotFoundException in Zircon Profile 8

DefaultLazyPluginCollection.php in core/lib/Drupal/Core/Plugin/DefaultLazyPluginCollection.php

Contains \Drupal\Core\Plugin\DefaultLazyPluginCollection.

DiscoveryTrait.php in core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php

Contains \Drupal\Component\Plugin\Discovery\DiscoveryTrait.

EntityDefinitionUpdateTest.php in core/modules/system/src/Tests/Entity/EntityDefinitionUpdateTest.php

Contains \Drupal\system\Tests\Entity\EntityDefinitionUpdateTest.

EntityFieldManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php

Contains \Drupal\Tests\Core\Entity\EntityFieldManagerTest.

EntityImageStyle.php in core/modules/image/src/Plugin/migrate/destination/EntityImageStyle.php

Contains \Drupal\image\Plugin\migrate\destination\EntityImageStyle.

EntityTypeBundleInfoTest.php in core/tests/Drupal/Tests/Core/Entity/EntityTypeBundleInfoTest.php

Contains \Drupal\Tests\Core\Entity\EntityTypeBundleInfoTest.

EntityTypeManager.php in core/lib/Drupal/Core/Entity/EntityTypeManager.php

Contains \Drupal\Core\Entity\EntityTypeManager.

EntityTypeManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityTypeManagerTest.php

Contains \Drupal\Tests\Core\Entity\EntityTypeManagerTest.

EntityTypeRepositoryTest.php in core/tests/Drupal/Tests/Core/Entity/EntityTypeRepositoryTest.php

Contains \Drupal\Tests\Core\Entity\EntityTypeRepositoryTest.

FieldDefinitionListenerTest.php in core/tests/Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php

Contains \Drupal\Tests\Core\Field\FieldDefinitionListenerTest.

FieldType.php in core/modules/field/src/Plugin/migrate/process/d6/FieldType.php

Contains \Drupal\field\Plugin\migrate\process\d6\FieldType.

ImageEffectFormBase.php in core/modules/image/src/Form/ImageEffectFormBase.php

Contains \Drupal\image\Form\ImageEffectFormBase.

ImageToolkitBase.php in core/lib/Drupal/Core/ImageToolkit/ImageToolkitBase.php

Contains \Drupal\Core\ImageToolkit\ImageToolkitBase.

ImageToolkitOperationManager.php in core/lib/Drupal/Core/ImageToolkit/ImageToolkitOperationManager.php

Contains \Drupal\Core\ImageToolkit\ImageToolkitOperationManager.

MenuLinkManager.php in core/lib/Drupal/Core/Menu/MenuLinkManager.php

Contains \Drupal\Core\Menu\MenuLinkManager.

MigrateDrupalTestBase.php in core/modules/migrate_drupal/src/Tests/MigrateDrupalTestBase.php

Contains \Drupal\migrate_drupal\Tests\MigrateDrupalTestBase.

PluginManagerBase.php in core/lib/Drupal/Component/Plugin/PluginManagerBase.php

Contains \Drupal\Component\Plugin\PluginManagerBase.

PluginManagerBaseTest.php in core/tests/Drupal/Tests/Component/Plugin/PluginManagerBaseTest.php

Contains \Drupal\Tests\Component\Plugin\PluginManagerBaseTest.