diff --git a/app/src/config/about.ts b/app/src/config/about.ts
index 19fc75f38..94432d4ef 100644
--- a/app/src/config/about.ts
+++ b/app/src/config/about.ts
@@ -397,6 +397,7 @@ export const about = {
                 window.siyuan.config.system.downloadInstallPkg = downloadInstallPkgElement.checked;
             });
         });
+        /// #if !BROWSER
         const autoLaunchElement = about.element.querySelector("#autoLaunch") as HTMLInputElement;
         autoLaunchElement.addEventListener("change", () => {
             fetchPost("/api/system/setAutoLaunch", {autoLaunch: autoLaunchElement.checked}, () => {
@@ -404,6 +405,7 @@ export const about = {
                 app.setLoginItemSettings({openAtLogin: autoLaunchElement.checked});
             });
         });
+        /// #endif
         about.element.querySelector("#aboutConfirm").addEventListener("click", () => {
             const scheme = (about.element.querySelector("#aboutScheme") as HTMLInputElement).value;
             const host = (about.element.querySelector("#aboutHost") as HTMLInputElement).value;
diff --git a/kernel/model/box.go b/kernel/model/box.go
index f6ef21498..1020549a3 100644
--- a/kernel/model/box.go
+++ b/kernel/model/box.go
@@ -464,6 +464,10 @@ func parseKTree(kramdown []byte) (ret *parse.Tree) {
 }
 
 func genTreeID(tree *parse.Tree) {
+	if nil == tree.Root.FirstChild {
+		tree.Root.AppendChild(parse.NewParagraph())
+	}
+
 	ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
 		if !entering {
 			return ast.WalkContinue