Fatal error: Uncaught Error: Call to undefined function import() in C:\xampp\htdocs\ojs\plugins\themes\bootstrap3\BootstrapThreeThemePlugin.inc.php:16 Stack trace: #0 C:\xampp\htdocs\ojs\plugins\themes\bootstrap3\index.php(19): require_once() #1 {main} thrown in C:\xampp\htdocs\ojs\plugins\themes\bootstrap3\BootstrapThreeThemePlugin.inc.php on line 16