什么'TypeError：无法读取属性'_locals'未定义'是什么意思？ [英] What does 'TypeError: Cannot read property '_locals' of undefined' mean?

问题描述

我在teamTreeHouse上做这个教程
https://teamtreehouse.com/library/express-basics/using-templates-with-express/using-jade-in-your-express-app

I'm doing this tutorial on teamTreeHouse https://teamtreehouse.com/library/express-basics/using-templates-with-express/using-jade-in-your-express-app

我收到此错误：

TypeError: Cannot read property '_locals' of undefined
   at EventEmitter.render (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\application.js:548:11)
   at c:\Users\bcarr\Web Projects\LTQ\app.js:12:9
   at Layer.handle [as handle_request] (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\layer.js:95:5)
   at next (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\route.js:131:13)
   at Route.dispatch (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\route.js:112:3)
   at Layer.handle [as handle_request] (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\layer.js:95:5)
   at c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\index.js:277:22
   at Function.process_params (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\index.js:330:12)
   at next (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\index.js:271:10)
   at expressInit (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\middleware\init.js:33:5)

现在我从这个域读到的，我没有名为_locals的文件夹。

now from what I've read from this domain, I have no folder named _locals.

app.set('view engine', 'jade');
app.set('views', './templates');

我正在使用这些代码行启动它。
我正在使用

I'm using these lines of code to start it. I was using

app.set('views', __dirname + './templates');

但我的app.js与我的模板文件夹LTQ在同一个文件夹中

but my app.js is in the same folder as my templates folder "LTQ"

为什么我会收到这个错误？
这是什么意思？

Why am I getting this error guys? What does it mean?

推荐答案

你能省略点，看看会发生什么。我的意思是这个

Can you ommit the dot and see what happens. I mean this

app.set('views', __dirname + '/templates');

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