Openwrt中的MWAN3点开配置报错？？

orac***

/usr/lib/lua/luci/dispatcher.lua:448: Failed to execute function dispatcher target for entry '/admin/network/mwan3/configuration'.
The called action terminated with an exception:
/usr/lib/lua/luci/dispatcher.lua:448: Failed to execute arcombine dispatcher target for entry '/admin/network/mwan3/configuration/interface'.
The called action terminated with an exception:
/usr/lib/lua/luci/cbi.lua:334: Unable to read UCI data: mwan3
stack traceback:
        [C]: in function 'assert'
        /usr/lib/lua/luci/dispatcher.lua:448: in function 'dispatch'
        /usr/lib/lua/luci/dispatcher.lua:195: in function </usr/lib/lua/luci/dispatcher.lua:194>