diff --git a/app.py b/app.py
index 30465c8..1817d29 100644
--- a/app.py
+++ b/app.py
@@ -99,11 +99,21 @@ def debug():
     """Debug-Route zum Überprüfen der Lektionen und Konfiguration"""
     progress = Progress.query.first()
     
+    # Versuche, den Inhalt der JSON-Datei zu lesen
+    json_content = "Datei nicht gefunden"
+    try:
+        if os.path.exists(DATA_PATH):
+            with open(DATA_PATH, "r", encoding="utf-8") as f:
+                json_content = f.read()
+    except Exception as e:
+        json_content = f"Fehler beim Lesen der Datei: {e}"
+    
     debug_info = {
         'lessons_loaded': len(lessons),
         'lessons_content': lessons,
         'data_path': DATA_PATH,
         'file_exists': os.path.exists(DATA_PATH),
+        'file_content': json_content[:500] + '...' if len(json_content) > 500 else json_content,
         'current_progress': {
             'current_text_index': progress.current_text_index if progress else None,
             'current_position': progress.current_position if progress else None,