默认视频封面

app/enterprise/model/PostsFile.php

@@ -27,12 +27,13 @@ class PostsFile extends Model
             if ($fileValue['type'] == 2) {
                 $is_video = 1;
                 $videoFile = $fileValue;
-            }
+            } else {
                 $privacyFile = $fileValue;
             }
+        }
         if ($is_video) {
             $newFiles = $videoFile;
-            $newFiles['privacy'] = $privacyFile['src'];
+            $newFiles['privacy'] = $privacyFile['src'] ?? '/static/common/img/video.png';
             $files = [$newFiles];
         }
         return $files;