Hi Nagesh,

Follow steps:

1. Download the lastest quickstart of premium template, for example, Educon II.
2. Unzip it, and take those two folders from it: administrator\components\com_sppagebuilder
   and components\com_sppagebuilder
3. Then using FTP tool copy & upload folders to server site. Override all files if needed!
4. Then reinstall component with the lastest version.
5. Clear Joomla cache.

SPPB guide: https://www.joomshaper.com/documentation/sp-page-builder/troubleshooting#failed-opening-required-components-com-sppagebuilder-builder-classes-base-php

You can also use SPPB package instead of quickstart, but

• Content from folder "site" goes to components\com_sppagebuilder
• Content from folder "admin" goes to administrator\components\com_sppagebuilder

Thanks will try and revert back.