From 6d52223bac36538b5934c383b9a239809eb4a72c Mon Sep 17 00:00:00 2001
From: Fabian Ebner <f.ebner@proxmox.com>
Date: Thu, 6 May 2021 14:16:27 +0200
Subject: [PATCH] ui: backup window: avoid issuing API call with null/empty
 parameter

could be triggered when there are no backup storages at all configured or if
the 'Backup now' button is clicked before the storage selector from the guests
'Backup' tab could load its store.

Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
---
 www/manager6/window/Backup.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/www/manager6/window/Backup.js b/www/manager6/window/Backup.js
index a6dc1798..72e8cb48 100644
--- a/www/manager6/window/Backup.js
+++ b/www/manager6/window/Backup.js
@@ -46,6 +46,10 @@ Ext.define('PVE.window.Backup', {
 	    allowBlank: false,
 	    listeners: {
 		change: function(f, v) {
+		    if (v === null || v === undefined || v === '') {
+			return;
+		    }
+
 		    let store = f.getStore();
 		    let rec = store.findRecord('storage', v, 0, false, true, true);