Error in world files: Root element is missing

[Former user]

Steps 1. Go to settings 2. Input Server: http://voyna-plemyon.ru 3. Welt URL: http://ru33.voyna-plemyon.ru 4. Click Save 5. Dialog window pop-up: Error in world files: Root element is missing 6. Attack planner isn't working properly

Coordinates for checking Attack Planner Здесь живёт WarMan1 (542|434) K45