undefined method `xy' for nil:NilClass
C:/Users/utfo8/AppData/Local/Temp/ocr96D6.tmp/src/unit.rb:1544:in `escort!'
C:/Users/utfo8/AppData/Local/Temp/ocr96D6.tmp/src/ai_after_move.rb:312:in `action_after_move'
C:/Users/utfo8/AppData/Local/Temp/ocr96D6.tmp/src/scenes.rb:659:in `main_battle'
C:/Users/utfo8/AppData/Local/Temp/ocr96D6.tmp/src/IMPERIALIZER.rb:272:in `block in <main>'
C:/Users/utfo8/AppData/Local/Temp/ocr96D6.tmp/src/IMPERIALIZER.rb:104:in `loop'
C:/Users/utfo8/AppData/Local/Temp/ocr96D6.tmp/src/IMPERIALIZER.rb:104:in `<main>'