Jiao
Thanks for that. This appears to be a problem with your iolite_helpers.py
file. Normally this file is located somewhere like
C:\Users\YourName\Documents\iolite\site-packages
But if something has changed about this path or the file was removed then you'll have a problem as you've shown.
The quickest and easiest solution is to try restoring the file by going to the advanced section of the preferences and clicking the button to restore site-packages.
If that does not fix it, I suggest that you check where iolite is looking for this file (and trying to restore it) by putting the code below in iolite's python console or workspace and running it.
from iolite.QtCore import QSettings
print(QSettings().value('Paths/PythonHelpersPath'))
If the path does not exist, let me know and I'll give you a couple options to get it sorted out.
All the best,