请教一下，redmine 安装 graphs 插件报错：

 ArgumentError in Graphs#old_issues

Showing app/ views/issues/_sidebar.html.erb where line #16 raised:

A copy of IssuesHelper has been removed from the module tree but is still active!

Extracted source (around line #16):

13: <% end %>
14: <%= call_hook(:view_issues_sidebar_planning_bottom) %>
15: 
16: <%= render_sidebar_queries %>
17: <%= call_hook(:view_issues_sidebar_queries_bottom) %>