过去项目图片不能正常显示代码修改

app/views/past_projects/_past_project.html.haml

 .block_label
    项目简介
  .block_content
 -  .right_image= image_tag asset_path(project.image_path :about), :alt => project.name
 +  .right_image= image_tag project_image_path(project, :about), :alt => project.name
    答题开始时间：#{project.start_time.strftime "%m月%d日"}
    %br
    :plain