Get an error while trying to composer update in laravel

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PHP

i was trying to do composer install to install the dependencies in a laravel project, then i got this error:

$ composer install
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for intervention/image 2.3.4 -> satisfiable by intervention/image[2.3.4].
    - intervention/image 2.3.4 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.

how to solve this problem? thanks you.