Fatal error: Call to undefined method JModel::addIncludePath() in ...

Fatal error: Call to undefined method JModel::addIncludePath() in ...

Hi.

I tried to update joomla before to update joomshopping, and now I have an issue. When I try to get into the website, I receive this message..

The problem is I'm not able to go back and restore. I would like to know how can I solve this, to be able to see the backend and update joomshopping with the way you mention.

Now my joomla us updated to the last version, but my joomshopping not and I can fix this issue.
Please I need help.

Thanks

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Aw: Fatal error: Call to undefined method JModel::addIncludePath() in ...

No simple solution.
Need manual update joomshopping (copy file from new version 4.8.0)
Update DB

or use kontakt for order development