I am using PHP 7.1 version in my drupal 7 the blaze is not working well. Due to comptability of the php version. Solution would be change ther PHP version in your linux cpanel server.
7.x: PHP 5.6, core Image, libraries and one of autoloader modules: registry_autoload, xautoload, autoload.
drupal:
https://www.drupal.org/project/blazy#...
Settings:
/admin/structure/views.
Tutorials website: http://headstartcms.com/
#blazydrupal7