diff --git a/routes/utils.py b/routes/utils.py
index 4923540..d74060f 100644
--- a/routes/utils.py
+++ b/routes/utils.py
@@ -44,20 +44,30 @@ def debug():
         json_error = str(e)
 
     lessons = helpers.get_lessons()
+    file_exists = os.path.exists(helpers.DATA_PATH)
+    file_content_preview = (json_content[:500] + '...') if len(json_content) > 500 else json_content
+
+    # Fortschritts-Infos nur aufbereiten, wenn ein Progress-Eintrag existiert
+    current_progress = None
+    if progress:
+        last_text = progress.last_text or ""
+        last_text_preview = (last_text[:100] + '...') if len(last_text) > 100 else last_text
+        current_progress = {
+            'current_text_index': progress.current_text_index,
+            'current_position': progress.current_position,
+            'last_text_length': len(last_text),
+            'last_text_preview': last_text_preview,
+        }
+
     debug_info = {
         'lessons_loaded': len(lessons),
         'lessons_sample': lessons[:3] if lessons else [],  # Nur erste 3 anzeigen
         'data_path': helpers.DATA_PATH,
-        'file_exists': os.path.exists(helpers.DATA_PATH),
-        'file_size': os.path.getsize(helpers.DATA_PATH) if os.path.exists(helpers.DATA_PATH) else 0,
-        'file_content_preview': json_content[:500] + '...' if len(json_content) > 500 else json_content,
+        'file_exists': file_exists,
+        'file_size': os.path.getsize(helpers.DATA_PATH) if file_exists else 0,
+        'file_content_preview': file_content_preview,
         'json_error': json_error,
-        'current_progress': {
-            'current_text_index': progress.current_text_index if progress else None,
-            'current_position': progress.current_position if progress else None,
-            'last_text_length': len(progress.last_text) if progress and progress.last_text else 0,
-            'last_text_preview': progress.last_text[:100] + '...' if progress and progress.last_text and len(progress.last_text) > 100 else progress.last_text if progress else None
-        } if progress else None,
+        'current_progress': current_progress,
         'app_root_path': current_app.root_path,
         'fallback_used': False  # Simplified check
     }