diff --git a/layout/_partial/main/navbar/breadcrumb.ejs b/layout/_partial/main/navbar/breadcrumb.ejs
index d4c4751..8a50c34 100644
--- a/layout/_partial/main/navbar/breadcrumb.ejs
+++ b/layout/_partial/main/navbar/breadcrumb.ejs
@@ -84,7 +84,7 @@ function layoutDiv() {
     el += '</div>';
     el += '</div>';
 
-    let repo = page.repo || proj.repo
+    const repo = page.repo || proj?.repo
     if (repo) {
       el += `
       <div class="right ghrepo stellar-ghinfo-api" api="${theme.api_host.ghapi}/repos/${repo}">
diff --git a/scripts/events/lib/doc_tree.js b/scripts/events/lib/doc_tree.js
index 53e09ba..c95b113 100644
--- a/scripts/events/lib/doc_tree.js
+++ b/scripts/events/lib/doc_tree.js
@@ -59,7 +59,7 @@ module.exports = ctx => {
   const wiki_pages = pages.filter(p => (p.layout === 'wiki')).map(p => new WikiPage(p))
   const wiki_list = Object.keys(wiki.tree)
   // 上架的项目列表
-  wiki.shelf = ctx.locals.get('data').wiki
+  wiki.shelf = ctx.locals.get('data').wiki || []
   
   // 数据整合：项目标签
   var all_tag_name = []
@@ -202,7 +202,6 @@ module.exports = ctx => {
 
   wiki.all_tags = all_tags
   wiki.all_pages = wiki_pages
-  wiki.shelf = ctx.locals.get('data').wiki
   ctx.theme.config.wiki = wiki
 
 }