gitlab发起合并请求报错，点击合并请求返回500错误

gitlab发起合并请求报错 500页面

版本

ActionView::Template::Error (undefined method `zh_name' for #<MergeRequest id:6 root/baiyangdian_3d!6>):

1: - is_current_user = issuable_author_is_current_user(issuable)

2: - display_issuable_type = issuable_display_type(issuable)

3: - button_method = issuable_close_reopen_button_method(issuable)

4: - are_close_and_open_buttons_hidden = issuable_button_hidden?(issuable, true) && issuable_button_hidden?(issuable, false)

这个是自己那个公司内部的吗，内部的就找负责人