Update api.py

api.py

@@ -142,8 +142,9 @@ async def validation_exception_handler(request: Request, exc: RequestValidationE
     error_details = exc.errors()
     error_messages = []
     for error in error_details:
+        loc = '->'.join(map(str, error['loc']))
         msg = error['msg']
-        error_messages.append(msg)
+        error_messages.append(f"{loc}: {msg}")
     error_message = "; ".join(error_messages) if error_messages else ""
     response_json = {'urls': urls, 'scraped_texts': '', 'scrape_errors': '', 'summaries': "", 'summarizer_error': f'Validation Error: {error_message}'}
     json_str = json.dumps(response_json, indent=5) # convert dict to JSON str