Hi,

We've used auto-update platform from WP-Updates: http://wp-updates.com/ and it seems the updates flatform from them has issues and they didn't fix it yet.

We're waiting for some weeks but they didn't fix the issues, so maybe in the next updates, we will remove this flatform.
And from future, please do follow this guide to update this theme - It's easy also and doesn't affect anything to your site:
https://pencidesign.ticksy.com/article/15633/
We're sorry about this inconvenience.

Best Regards,
PenciDesign