add {% if req.query}

src/server/views/widget/page_content.html

@@ -17,9 +17,9 @@
   data-page-is-deleted="{% if page.isDeleted() %}true{% else %}false{% endif %}"
   data-page-is-deletable="{% if isDeletablePage() %}true{% else %}false{% endif %}"
   data-page-is-not-creatable="false"
-  data-page-path-before-duplicated="{{req.query.duplicated}}"
-  data-page-path-before-renamed="{{req.query.renamedFrom}}"
-  data-page-path-before-redirected="{{req.query.redirectFrom}}"
+  data-page-path-before-duplicated="{% if req.query %}{{req.query.duplicated}}{% endif %}"
+  data-page-path-before-renamed="{% if req.query %}{{req.query.renamedFrom}}{% endif %}"
+  data-page-path-before-redirected="{% if req.query %}{{req.query.redirectFrom}}{% endif %}"
   data-page-is-able-to-delete-completely="{% if user.canDeleteCompletely(page.creator._id) %}true{% else %}false{% endif %}"
   data-slack-channels="{{ slack|default('') }}"
   data-page-created-at="{% if page %}{{ page.createdAt|datetz('Y/m/d H:i:s') }}{% endif %}"