在 Level Helper 和 Sprite Helper 的帮助下,我开始在 Corona SDK 上制作游戏。我已经使用了这个视频教程,所有的事情都和视频中的完全一样,但是我有这个错误。我不明白为什么。
File: ...DK Projects/Runner/LevelHelper/LevelHelperLoader.lua  
Line: 743
stack traceback:  
    [C]: ?  
    ...DK Projects/Runner/LevelHelper/LevelHelperLoader.lua:743: in function 'createAllNodes'  
    ...DK Projects/Runner/LevelHelper/LevelHelperLoader.lua:150: in function 'instantiateObjects'  
    ...slav/Documents/Corona SDK Projects/Runner/level1.lua:34: in function <...slav/Documents/Corona SDK Projects/Runner/level1.lua:29>  
    ?: in function 'dispatchEvent'  
    ?: in function 'gotoScene'  
    ...heslav/Documents/Corona SDK Projects/Runner/menu.lua:22: in function '_onRelease'  
    ?: in function '?'  
    ?: in function <?:371>  
    ?: in function <?:218> 
Attempt to index field 'lhNodes' (a nil value)
你能告诉我我做错了什么吗?