Update the command is sudo apt install php-curl that worked
Alright, thanks for the updated here with your resolved command.
I see this when I try to fetch mail now I'm guessing it's something with Zoho and not the software
This error shows your mailbox is not added with this domain: imappro.zoho.com
Once you can setup again with the add correct app password of your zoho email.
We suggested to you, once you can try with the any other email services like gmail, yahoo instead of zoho mail.
Thanks and Regards
Uvdesk Team