Luci web interface not opening

[JunaidShafi]

Can you help me with this.
whenever i try to open web interface it is showing me

/usr/lib/lua/luci/dispatcher.lua:1129: bad argument #2 to '?' (integer expected, got number)
stack traceback:
[C]: in function 'error'
/usr/lib/lua/luci/util.lua:49: in function </usr/lib/lua/luci/util.lua:30>
/usr/lib/lua/luci/dispatcher.lua:1129: in function 'createtree_json'
/usr/lib/lua/luci/dispatcher.lua:702: in function 'menu_json'
/usr/lib/lua/luci/dispatcher.lua:795: in function 'dispatch'
/usr/lib/lua/luci/dispatcher.lua:478: in function </usr/lib/lua/luci/dispatcher.lua:477>

the device is JIO_JIDU6J11_R2.0.9