Hello Subhajit, thanks for choosing Origami! Please enable the debug mode on your WP installation and let me know which errors appear after activating the theme.
Cheers,
Andrii / Satori Studio
Deprecated: Function get_currentuserinfo is deprecated since version 4.5.0! Use wp_get_current_user() instead. in /var/www/html/wp-includes/functions.php on line 5383