Fatal error: Uncaught Error: Class 'CFormModel' not found in /var/www/html/dev/sophia_frm_ext_lib/extensions/xupload/models/XUploadForm.php:2 Stack trace: #0 {main} thrown in /var/www/html/dev/sophia_frm_ext_lib/extensions/xupload/models/XUploadForm.php on line 2