error 0 Class 'ZipArchive' not found when installing CB main comp last version

Hi
when trying to install CB last version as suggested just opening my joomla 3.9.25 website
i.e.
2.5.0+build.2021.03.29.19.51.43.c82ad6ad4
I get error as per subject, even installing by joomla control panel, even installing through CB control panel, even installing after having downloaded the file at local.
Never happened until now

Thks

Please contact your host. They do not have zip compiled with PHP. ZipArchive is required to handle zip files. Provide your host the following if they're unsure how to enable zip.

www.php.net/manual/en/zip.installation.php

near impossible. I have access to php control panel and rush to double-check.
But .zip files were uploaded and installed from every third parties by me personally until 4 o 5 days ago !!! Successfully !!

You were right: PHP 7.4 "zip" option was disabled.
I flagged it, and installation went smmothly successfully.
I wonder how that option was not checked , and why is there on php 7.4

Anyway

Many thanks

Gino

But .zip files were uploaded and installed from every third parties by me personally until 4 o 5 days ago !!! Successfully !!

Joomla has a fallback for extracting zip files if ZipArchive isn't available. We've no such fallback and depend on ZipArchive. Some core Joomla functionality also relies on ZipArchive, but just not the installer.

I wonder how that option was not checked , and why is there on php 7.4

Originally the PHP flag compiled PHP with libzip AND zip extension, but now libzip is always included with PHP now so the flag was changed to only add the zip extension.