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Fatal error: Uncaught Error: Class 'Yii' not found in /var/www/html/dev/sophia_frm_ext_lib/extensions/yiibooster/gii/bootstrap/views/index.php:6 Stack trace: #0 {main} thrown in /var/www/html/dev/sophia_frm_ext_lib/extensions/yiibooster/gii/bootstrap/views/index.php on line 6