Lua（Corona SDK）Android问题-间隔为空

在计算机上，我的游戏可以顺利编译并正常运行，但是一旦我为Android构建它，我就会得到这个奇怪的错误代码：

bad argument #1 to 'random' (interval is empty)

这个错误代码来自以下代码行：

local word = wordsList[math.random(#wordsList)]

整个代码片段如下：

local lineCount = 1
local wordsList = {}
local wordAccepted = true
local file = io.open( system.pathForFile( "words.txt", system.ResourceDirectory ), "r" ) --从资源文件夹打开单词文件
for line in file:lines() do
    if #line > 1 and #line <= 10 then
        for i = 1,#line do
            if string.byte(line,i)<65 or string.byte(line,i)>90 and string.byte(line,i)<97 or string.byte(line,i)>122 then
                wordAccepted = false
            end
        end
        if wordAccepted == true then
            print ("accepted "..line)
            wordsList[lineCount]=string.upper(line)
            lineCount = lineCount + 1
        else
            print("rejected "..line)
        end
    end
end
io.close( file )
file = nil
local word = wordsList[math.random(#wordsList)]