Update api.py

api.py

@@ -142,7 +142,7 @@ 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']))
+        loc = map(str, error['loc'])[-1]
         msg = error['msg']
         error_messages.append(f"{loc}: {msg}")
     error_message = "; ".join(error_messages) if error_messages else ""