Edit file File name : Concrete5Installer.php Content :<?php namespace Composer\Installers; class Concrete5Installer extends BaseInstaller { protected $locations = array( 'core' => 'concrete/', 'block' => 'application/blocks/{$name}/', 'package' => 'packages/{$name}/', 'theme' => 'application/themes/{$name}/', 'update' => 'updates/{$name}/', ); } Save