Unable to update

I am trying to update the template. I have the 6.0.8 template
I update kunena and joomla to the latest versions and I try to update the template, too. But there is an error
danger
Joomla\Filesystem\File::move: Rename failed.
How can I solve it?

Hi alsthom,
What are you using Kunena version on our website? If you are using Kunena version 7.0.x, you should use the nts_kfora.zip package instead of the nts_kfora_k6.4.11.zip package.

Kind regards,