diff --git a/core/includes/errors.inc b/core/includes/errors.inc
index caa2f553e2..1a40a5358e 100644
--- a/core/includes/errors.inc
+++ b/core/includes/errors.inc
@@ -331,7 +331,12 @@ function _drupal_get_error_level() {
     $error_level = \Drupal::config('system.logging')->get('error_level');
   }
   catch (\Exception $e) {
-    $error_level = $GLOBALS['config']['system.logging']['error_level'] ?? ERROR_REPORTING_HIDE;
+    if (!is_object($GLOBALS['config']) || get_class($GLOBALS['config']) != 'SimpleSAML\Configuration') {
+      $error_level = $GLOBALS['config']['system.logging']['error_level'] ?? ERROR_REPORTING_HIDE;
+    }
+    else {
+      $error_level = ERROR_REPORTING_HIDE;
+    }
   }
 
   // If there is no container or if it has no config.factory service, we are