Tune theme update failing

Hi all, I’ve bought Tune theme few years ago, now I want to update it. I have the minimum server requirements (PHP 7.4.33 and so the other specs) but the theme doesn’t seem to work. What’s wrong?
Thank you, Gloria

Screenshot 2024-01-25 at 16.24.39

There’s a warning over there related to PHP in French, most likely, you need to change the PHP to 8.x

Thanks for the answer, but already tried it. It generates undefined error and the website crashes. Maybe due to some other plugin, just don’t know :frowning: Told to the client to rebuild the website. Let’s see if I can start from the beginning.