I can't update PHP version

[khaihung170700]

Dear Admin

sudo apt update && sudo apt upgradesudo apt update && sudo apt upgrade
sudo add-apt-repository ppa:ondrej/php
sudo apt update && sudo apt install php8.0

I hope this email finds you well. I am facing an issue related to updating PHP on my website and I am unable to solve it on my own. I would like to request your assistance in resolving this issue.

Specifically, when I try to update PHP on my website, I receive an error message and am unable to complete the update process. I have tried several different methods but have been unsuccessful. Therefore, I need your help to resolve this issue.

Could you please assist me by reviewing and providing specific guidance on how I can successfully update PHP on my website? Or if there are any other solutions, I would greatly appreciate your advice.

If you need further information or details regarding this issue, please feel free to contact me by replying to this email. I am looking forward to your support and thank you in advance.
You can watch my video here
https://drive.google.com/file/d/11f4D1-4JBQ_7y0ICzCMW-yZxyWzTVE-K/view?usp=sharing
Best regards,

 

[t.lamprecht]

You're missing the GPG release key for the turnkey repos, I'd recommend asking on their channels as this seems to be an issue of the Container OS configuration and thus unrelated to Proxmox VE directly:

https://www.turnkeylinux.org/forum