Problem installing Upfront on localhost

I'm trying for the first time to install, and it come with these erros:
Warning: include_once(C:\xampp\htdocs\Boca-a-boca/wp-content/themes/upfront/library/upfront_functions.php): failed to open stream: No such file or directory in C:\xampp\htdocs\Boca-a-boca\wp-content\themes\uf-spirit\functions.php on line 3

Warning: include_once(): Failed opening 'C:\xampp\htdocs\Boca-a-boca/wp-content/themes/upfront/library/upfront_functions.php' for inclusion (include_path='.;C:\xampp\php\PEAR') in C:\xampp\htdocs\Boca-a-boca\wp-content\themes\uf-spirit\functions.php on line 3

Warning: require_once(servers/class_upfront_ajax.php): failed to open stream: No such file or directory in C:\xampp\htdocs\Boca-a-boca\wp-content\themes\upfront\library\class_upfront_server.php on line 68

Fatal error: require_once(): Failed opening required 'servers/class_upfront_ajax.php' (include_path='.;C:\xampp\php\PEAR') in C:\xampp\htdocs\Boca-a-boca\wp-content\themes\upfront\library\class_upfront_server.php on line 68