update

backend/routes.py

@@ -74,8 +74,10 @@ async def feature_anlegen(name: str, body: dict):
 async def feature_speichern(name: str, id: str, body: dict):
     try:
         return features.speichern(name, id, body.get("roh") or "")
-    except (FileNotFoundError, ValueError) as e:
+    except FileNotFoundError as e:
         raise HTTPException(404, str(e))
+    except ValueError as e:
+        raise HTTPException(400, str(e))
 
 
 @router.delete("/projekte/{name}/features/{id}")