[]做了一个最简单的显示微信子域的程序，但是报错Cannot read property 'USER_DATA_PATH' of undefined

Uncaught TypeError: Cannot read property 'USER_DATA_PATH' of undefined
at Function.MiniFileMgr.setNativeFileDir (laya.wxmini.js:615)
at Function.MiniAdpter.init (laya.wxmini.js:33)
at Function.MiniAdpter.enable (laya.wxmini.js:19)
at Function.Browser.__init__ (laya.core.js:8643)
at Object.Laya.init (laya.core.js:252)
at new Main (Main.js:6)
at Object.2../GameConfig (Main.js:37)
at o (_prelude.js:11)
at r (_prelude.js:11)
at _prelude.js:11
MiniFileMgr.setNativeFileDir @ laya.wxmini.js:615
MiniAdpter.init @ laya.wxmini.js:33
MiniAdpter.enable @ laya.wxmini.js:19
Browser.__init__ @ laya.core.js:8643
Laya.init @ laya.core.js:252
Main @ Main.js:6
2../GameConfig @ Main.js:37
o @ _prelude.js:11
r @ _prelude.js:11
(anonymous) @ _prelude.js:11
require @ WAGameSubContext.js:1
(anonymous) @ WAGameSubContext.js:1
(anonymous) @ index.js:18
require @ WAGameSubContext.js:1
(anonymous) @ subcontext.html:26


官网文档上一行参照代码也没有，于是我就创建了两个项目，一个主域，一个子域，发布微信小游戏，然年就出现了以上的报错，这有页面，没有写逻辑代码，附件解压后可以直接在微信开发者工具里使用，麻烦帮忙看一下是什么问题