Shiny应用报错：通过selectInput选择时元素在数据集中不存在

触发的错误信息 #

Caused by error in `all_of()`:
! Can't subset elements that don't exist.
✖ Element `abs_edu` doesn't exist.

完整应用代码 #

[原代码内容保留不变]

会话信息 #

[原会话信息内容保留不变]

内容的提问来源于stack exchange，提问作者firmo23