diff --git a/Zhihu-Enhanced.user.js b/Zhihu-Enhanced.user.js
index 2da272a..7d9a907 100644
--- a/Zhihu-Enhanced.user.js
+++ b/Zhihu-Enhanced.user.js
@@ -1,6 +1,6 @@
 // ==UserScript==
 // @name         知乎增强
-// @version      1.7.9
+// @version      1.8.0
 // @author       X.I.U
 // @description  移除登录弹窗、屏蔽首页视频、默认收起回答、快捷收起当前回答/评论（左键两侧空白处）、快捷回到顶部（右键两侧空白处）、屏蔽用户 (发布的内容)、屏蔽关键词（标题/评论）、屏蔽盐选内容、净化标题消息、展开问题描述、置顶显示时间、完整问题时间、区分问题文章、直达问题按钮、默认高清原图、默认站外直链
 // @match        *://www.zhihu.com/*
@@ -604,7 +604,8 @@ function blockUsers(type) {
             for (const mutation of mutationsList) {
                 for (const target of mutation.addedNodes) {
                     if (target.nodeType != 1) return
-                    if (target.className.indexOf('Popover-content Popover-content--top HoverCard-popoverTarget') > -1 || target.className.indexOf('Popover-content Popover-content--bottom HoverCard-popoverTarget') > -1 || target.querySelector('.Popover-content.Popover-content--top.HoverCard-popoverTarget') || target.querySelector('.Popover-content.Popover-content--bottom.HoverCard-popoverTarget')) {
+                    console.log(target, target.className)
+                    if (target.className && (target.className.indexOf('Popover-content Popover-content--top HoverCard-popoverTarget') > -1 || target.className.indexOf('Popover-content Popover-content--bottom HoverCard-popoverTarget') > -1) || target.querySelector('.Popover-content.Popover-content--top.HoverCard-popoverTarget') || target.querySelector('.Popover-content.Popover-content--bottom.HoverCard-popoverTarget')) {
                         let item = target.querySelector('.MemberButtonGroup.ProfileButtonGroup.HoverCard-buttons'),
                             item1 = target.querySelector('a.UserLink-link'),
                             name = item1.textContent,