Joomla! Template JD Ohio - Item Support

Hello,
I've purchased the template for 1 domain.
After some days the homepage show me this error: "Class 'Helix3FeatureCommon_config' not found"
How can I solve it?

Thank you
Massimo
Hello,
I've update both the plugins. Error showing again..
www.mohoprize.com
Hello,
I've saw that the error hasn't been solved.
In this case, please refund me.
Thank you
Hello,
I can re-install the quickstart by myself. Support requested seems not so good in this case.
Anyway thank you for your, appreciate but useless, efforts.

Thank you
Item Name:
JD Ohio
Author:
Downloads:
362
Sales:
23
Created:
2017-05-12
Updated:
2020-09-26
Item Version:
1.4.0
Supported Joomla:
Joomla 3 Product