Error executing Composer install

I'm cloning a repository of GitHub GitScrum and when I run the command Composer Install , it returns me the following error: / p>

  

C: \ www \ GitScrum> composer install

     

[32mLoading composer repositories with package information [39m   [32mInstalling dependencies (including require-dev) from lock file [39m   [37; 41mYour requirements could not be solved to an installable set   of packages. [39; 49m

     

Problem 1       - Installation request for guzzle / guzzle v3.8.1 - > satisfiable by guzzle / guzzle [v3.8.1].       - guzzle / guzzle v3.8.1 requires ext-curl * - > the requested PHP extension curl is missing from your system. Problem 2       - Installation request for intervention / image 2.3.8 - > satisfiable by intervention / image [2.3.8].       - intervention / image 2.3.8 requires ext-fileinfo * - > the requested PHP extension fileinfo is missing from your system.
  Problem 3       - Installation request for knplabs / github-api 1.7.1 - > satisfiable by knplabs / github-api [1.7.1].       - knplabs / github-api 1.7.1 requires ext-curl * - > the requested PHP extension curl is missing from your system. Problem 4       - knplabs / github-api 1.7.1 requires ext-curl * - > the requested PHP extension curl is missing from your system.       - graham-campbell / github v4.4.2 requires knplabs / github-api ^ 1.3 - > satisfiable by knplabs / github-api [1.7.1].       - Installation request for graham-campbell / github v4.4.2 - > satisfiable by graham-campbell / github [v4.4.2].

     

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

How to resolve?