diff --git a/server/plugin/plg_backend_storj/index.go b/server/plugin/plg_backend_storj/index.go
index bdc05b13..4a29b883 100644
--- a/server/plugin/plg_backend_storj/index.go
+++ b/server/plugin/plg_backend_storj/index.go
@@ -90,8 +90,12 @@ func (this Storj) Ls(path string) ([]os.FileInfo, error) {
 		})
 		for objects.Next() {
 			item := objects.Item()
+			fname := filepath.Base(item.Key)
+			if fname == ".file_placeholder" {
+				continue
+			}
 			files = append(files, File{
-				FName: filepath.Base(item.Key),
+				FName: fname,
 				FType: func() string {
 					if item.IsPrefix {
 						return "directory"
diff --git a/server/plugin/plg_image_thumbnail/index.go b/server/plugin/plg_image_thumbnail/index.go
index 1805cf86..00977d37 100644
--- a/server/plugin/plg_image_thumbnail/index.go
+++ b/server/plugin/plg_image_thumbnail/index.go
@@ -124,9 +124,7 @@ func (this ThumbnailExecutable) Init() {
 			return
 		}
 	}
-	if f.Close() != nil {
-		Log.Warning("plg_image_thumbnail::init::close '%s'", this.Name)
-	}
+	f.Close()
 }
 
 func (this *ThumbnailExecutable) verify() bool {