diff -u b/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php b/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php
--- b/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php
+++ b/core/lib/Drupal/Core/EventSubscriber/ConfigImportSubscriber.php
@@ -167,7 +167,7 @@
     if ($reasons = $this->moduleInstaller->validateUninstall($uninstalls)) {
       foreach ($reasons as $module => $reason) {
         $module_name = $module_data[$module]->info['name'];
-        $config_importer->logError($this->t('Unable to uninstall the %module module because: !reason.', ['%module' => $module_name, '!reason' => implode(', ', $reason)]));
+        $config_importer->logError($this->t('Unable to uninstall the %module module because: @reason.', ['%module' => $module_name, '@reason' => implode(', ', $reason)]));
       }
     }