undefined method `*' for nil:NilClass
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_alert.rb:386:in `block (2 levels) in get_exist'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_alert.rb:376:in `each'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_alert.rb:376:in `block in get_exist'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_alert.rb:375:in `each'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_alert.rb:375:in `get_exist'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_get_area.rb:201:in `get_ex_area'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_get_area.rb:40:in `block in seach_unit'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_get_area.rb:37:in `each'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai_get_area.rb:37:in `seach_unit'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai.rb:633:in `block in start'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai.rb:633:in `each'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/ai.rb:633:in `start'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/scenes.rb:610:in `main_battle'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/IMPERIALIZER.rb:321:in `block in <main>'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/IMPERIALIZER.rb:131:in `loop'
C:/Users/maeka/AppData/Local/Temp/ocr4D6A.tmp/src/IMPERIALIZER.rb:131:in `<main>'