When I run a composer update I get this error message:
composer update
Loading composer repositories with package information Updating dependencies (including r
Depending on your flavour of Linux and PHP version these may vary.
(sudo) yum install zip unzip php-zip (sudo) apt install zip unzip php-zip
This is a very commonly asked question, you'll be able to find more useful info in the aether by searching php zip extension.
php zip extension