处理图片主图为空

app/Model/v3/Goods.php

@@ -109,7 +109,11 @@ class Goods extends Model
 
     public function getCoverImgAttribute($value)
     {
+        if(!empty($value)) {
             return $this->attachmentService->switchImgToAliOss($value, OssThumbnail::THUMBNAIL_600_Q90);
+        }else{
+            return '';
+        }
     }
 
     public function getMonthSalesAttribute()