From 8166eaf87974592dbc3b0726b5f46420e510dae7 Mon Sep 17 00:00:00 2001
From: Liang Ding <d@b3log.org>
Date: Tue, 20 Sep 2022 10:31:19 +0800
Subject: [PATCH] :art: Updater

---
 kernel/model/updater.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/model/updater.go b/kernel/model/updater.go
index f8cdc38f9..3a13a8643 100644
--- a/kernel/model/updater.go
+++ b/kernel/model/updater.go
@@ -133,6 +133,10 @@ func getUpdatePkg() (downloadPkgURL, checksum string, err error) {
 }
 
 func downloadInstallPkg(pkgURL, checksum string) {
+	if "" == pkgURL || "" == checksum {
+		return
+	}
+
 	pkg := path.Base(pkgURL)
 	savePath := filepath.Join(util.TempDir, "install", pkg)
 	if gulu.File.IsExist(savePath) {