Update app.py

app.py

@@ -65,7 +65,7 @@ def store_document_data(PDF_FILE):
         except requests.exceptions.RequestException as e:
             return {"error": str(e)}
     
-        return json={"doc_index": doc_index}
+        return {"doc_index": doc_index}
     else:
         return "No PDF file provided."