我移动了middleclass.lua，看来我弄乱了它的目录。有人可以帮忙吗？
谢谢。
这是错误消息：
Error
Paddle.lua:1: module 'middleclass.lua' not found:
no field package.preload['middleclass.lua']
no 'middleclass/lua' in LOVE game directories.
no file 'middleclass/lua' in LOVE paths.
no file '.\middleclass\lua.lua'
no file 'C:\Program Files\LOVE\lua\middleclass\lua.lua'
no file 'C:\Program Files\LOVE\lua\middleclass\lua\init.lua'
no file 'C:\Program Files (x86)\Lua\5.1\lua\middleclass\lua.luac'
no file '.\middleclass\lua.dll'
no file 'C:\Program Files\LOVE\middleclass\lua.dll'
no file 'C:\Program Files\LOVE\loadall.dll'
no file '.\middleclass.dll'
no file 'C:\Program Files\LOVE\middleclass.dll'
no file 'C:\Program Files\LOVE\loadall.dll'
Traceback
[C]: in function 'require'
Paddle.lua:1: in main chunk
[C]: in function 'require'
main.lua:1: in main chunk
[C]: in function 'require'
[C]: in function 'xpcall'
[C]: in function 'xpcall'