openwrt 报错 Runtime error

[PC12138-Z]

Runtime error Unhandled exception during request dispatching /usr/lib/lua/luci/ucodebridge.lua:23: ...r/lib/lua/luci/model/cbi/esurfing-client/setting.lua:2: attempt to call method 'get_wandev' (a nil value)

In error(), file [C] called from function [anonymous function] (/usr/lib/lua/luci/ucodebridge.lua:23) called from function ((tail call)) In anonymous function, file /usr/share/ucode/luci/runtime.uc, line 148, byte 45: called from function [arrow function] (/usr/share/ucode/luci/dispatcher.uc:794:4) called from function render ([C]) called from function render_action (/usr/share/ucode/luci/dispatcher.uc:768:24) called from function run_action (/usr/share/ucode/luci/dispatcher.uc:795:4) called from function [anonymous function] (/usr/share/ucode/luci/dispatcher.uc:1008:48) called from function run_action (/usr/share/ucode/luci/dispatcher.uc:831:78) called from function [anonymous function] (/usr/share/ucode/luci/dispatcher.uc:1008:48) called from anonymous function (/www/cgi-bin/luci:39:13)

return lcall.call(modname, method, ...args); Near here ----------------------------------------^