specify the screen properly

init.lua

@@ -19,6 +19,7 @@ systray:set_base_size(switcherpopup.systraySize)
 function switcherpopup.new(s)
   local popup = false
   local tasklistWidget = wibox.widget{
+    screen = s,
     layout = wibox.layout.grid.vertical(math.floor(s.geometry.width / (switcherpopup.iconSize + switcherpopup.spacing)))
   }
   local clock = wibox.container.place(wibox.widget.textclock("%H:%M %Y-%m-%d"), "center", "center")