Fixed chat popup for server

modules/addons/chat-popups.lua

@@ -9,6 +9,7 @@ local config = require 'config.popup_messages' --- @dep config.popup_messages
 local send_text = Game.print_player_floating_text -- (player_index, text, color)
 
 Event.add(defines.events.on_console_chat,function(event)
+    if not event.player_index or event.player_index < 1 then return end
     local player = Game.get_player_by_index(event.player_index)
 
     -- Some basic sanity checks