- added new validation

common/modules/analyticsSchool/models/AnalyticsSchoolCourse.php

@@ -46,7 +46,7 @@ class AnalyticsSchoolCourse extends \common\components\ActiveRecordModel
             [['name','status'], 'required'],
             [['status'], 'integer'],
             [['description', 'image'], 'string'],
-            [['uploadedImage'], 'file', 'extensions' => ['pdf', 'jpeg', 'png']],
+            [['uploadedImage'], 'file', 'extensions' => ['jpg', 'jpeg', 'png']],
             [['name'], 'string', 'max' => 255],
         ];
     }