Openwrt 18.6.4 x:get() get failure

local uci = require "luci.model.uci"

-- Get asection type or an option
x =uci.cursor()
a =x:get("kickass", "kickass", "enable")

When I log in to luci
Get the wrong value (bool) under a non-root user;;;get Error page (html)

The root user login is correct。

I verified that it really has a relationship with the permissions.

I added a user to ask how to make him use x:get()????

thank you very much