C:\xampp\htdocs\massmediagroup.loc>C:/xampp/php/php composer.phar update
PHP Warning:  Version warning: Imagick was compiled against ImageMagick version 1799 but version 1801 is loaded. Imagick will run but may behave surprisingly in Unknown on line 0

Warning: Version warning: Imagick was compiled against ImageMagick version 1799 but version 1801 is loaded. Imagick will run but may behave surprisingly in Unknown on line 0
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - laravel/horizon v3.7.2 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.
    - laravel/horizon v3.7.1 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.
    - laravel/horizon v3.7.0 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.
    - laravel/horizon v3.7.2 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.
    - Installation request for laravel/horizon ^3.7 -> satisfiable by laravel/horizon[v3.7.0, v3.7.1, v3.7.2].

  To enable extensions, verify that they are enabled in your .ini files:
    - C:\xampp\php\php.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.