the scheduled job failed when the scheduled notebook include modules from same folder

The Scheduled job failed to produce results if the scheduled notebook need to import modules from same folder.

Folder 1
scheduled_notebook
module1.py
module2.py

if my scheduled_notebook needs to read modlue1 and module2 from the same folder, the run will fault with 'Execution using papermill encountered an exception here and stopped: ModuleNotFoundError:.."