Hide debug_info from API output

app.py

@@ -30,7 +30,7 @@ def convert(s: str, theme: Literal["light", "dark"], debug_info: str) -> str:
         )
     except nbformat.reader.NotJSONError:
         print(400, f"Notebook is not JSON. {debug_info}")
-        raise HTTPException(400, f"Notebook is not JSON. {debug_info}")
+        raise HTTPException(400, f"Notebook is not JSON.")
     except ValidationError as e:
         print(
             400,
@@ -38,7 +38,7 @@ def convert(s: str, theme: Literal["light", "dark"], debug_info: str) -> str:
         )
         raise HTTPException(
             400,
-            f"Notebook is invalid according to nbformat: {e}. {debug_info}",
+            f"Notebook is invalid according to nbformat: {e}.",
         )
 
     print(f"Input: nbformat v{notebook_node.nbformat}.{notebook_node.nbformat_minor}")