From c65ed97d5ced542a114c2a17361dc46014e76407 Mon Sep 17 00:00:00 2001
From: Holger Brunn <mail@hunki-enterprises.com>
Date: Fri, 30 Apr 2021 12:02:14 +0200
Subject: [PATCH] [FIX] attachment_preview: start needs to return a promise

---
 attachment_preview/static/src/js/attachment_preview.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/attachment_preview/static/src/js/attachment_preview.js b/attachment_preview/static/src/js/attachment_preview.js
index 865e1f04..85413877 100644
--- a/attachment_preview/static/src/js/attachment_preview.js
+++ b/attachment_preview/static/src/js/attachment_preview.js
@@ -328,8 +328,10 @@ odoo.define('attachment_preview', function (require) {
         },
 
         start: function () {
-            this._super.apply(this, arguments);
-            this.attachmentPreviewWidget.insertAfter(this.$el);
+            var self = this;
+            return this._super.apply(this, arguments).then(function () {
+                return self.attachmentPreviewWidget.insertAfter(self.$el);
+            });
         },
 
         _attachmentPreviewWidgetHidden: function () {