6 files declare their use of PreExistingConfigException in Drupal 8
- ConfigInstallTest.php in core/
tests/ Drupal/ KernelTests/ Core/ Config/ ConfigInstallTest.php - ConfigInstallWebTest.php in core/
modules/ config/ tests/ src/ Functional/ ConfigInstallWebTest.php - ModulesListConfirmForm.php in core/
modules/ system/ src/ Form/ ModulesListConfirmForm.php - ModulesListForm.php in core/
modules/ system/ src/ Form/ ModulesListForm.php - ThemeController.php in core/
modules/ system/ src/ Controller/ ThemeController.php - ThemeExperimentalConfirmForm.php in core/
modules/ system/ src/ Form/ ThemeExperimentalConfirmForm.php