LuCI 500 error

gistfile1.txt

/usr/lib/lua/luci/template.lua:55: Failed to execute template 'freifunk/index'.
A runtime error occured: /usr/lib/lua/luci/template.lua:55: Failed to execute template 'header'.
A runtime error occured: /usr/lib/lua/luci/template.lua:55: Failed to execute template 'themes/bootstrap/header'.
A runtime error occured: [string "/usr/lib/lua/luci/view/themes/bootstrap/hea..."]:78: attempt to index local 'boardinfo' (a nil value)
stack traceback:
	[C]: in function 'assert'
	/usr/lib/lua/luci/dispatcher.lua:360: in function 'dispatch'
	/usr/lib/lua/luci/dispatcher.lua:135: in function </usr/lib/lua/luci/dispatcher.lua:134>
Status: 500 Internal Server Error
/usr/lib/lua/luci/dispatcher.lua:360: Failed to execute function dispatcher target for entry '/'.
The called action terminated with an exception:
/usr/lib/lua/luci/dispatcher.lua:360: Failed to execute function dispatcher target for entry '/freifunk'.
The called action terminated with an exception:
/usr/lib/lua/luci/dispatcher.lua:360: Failed to execute template dispatcher target for entry '/freifunk/index'.
The called action terminated with an exception:
/usr/lib/lua/luci/template.lua:55: Failed to execute template 'freifunk/index'.
A runtime error occured: /usr/lib/lua/luci/template.lua:55: Failed to execute template 'header'.
A runtime error occured: /usr/lib/lua/luci/template.lua:55: Failed to execute template 'themes/bootstrap/header'.
A runtime error occured: [string "/usr/lib/lua/luci/view/themes/bootstrap/hea..."]:78: attempt to index local 'boardinfo' (a nil value)
stack traceback:
	[C]: in function 'assert'
	/usr/lib/lua/luci/dispatcher.lua:360: in function 'dispatch'