Error: failed to locate view "layout"

Question

为了定位错误，我将项目删减到最简，现在只留下index,在浏览器中报错为

Error: failed to locate view "layout"
    at Function.exports.compile (/home/pc/project/mongooseLearning/node_modules/express/lib/view.js:61:15)
    at ServerResponse.res._render (/home/pc/project/mongooseLearning/node_modules/express/lib/view.js:417:18)
    at ServerResponse.res.render (/home/pc/project/mongooseLearning/node_modules/express/lib/view.js:318:17)
    at ServerResponse.res._render (/home/pc/project/mongooseLearning/node_modules/express/lib/view.js:432:10)
    at ServerResponse.res.render (/home/pc/project/mongooseLearning/node_modules/express/lib/view.js:318:17)
    at /home/pc/project/mongooseLearning/app.js:47:7
    at callbacks (/home/pc/project/mongooseLearning/node_modules/express/lib/router/index.js:272:11)
    at param (/home/pc/project/mongooseLearning/node_modules/express/lib/router/index.js:246:11)
    at pass (/home/pc/project/mongooseLearning/node_modules/express/lib/router/index.js:253:5)
    at Router._dispatch (/home/pc/project/mongooseLearning/node_modules/express/lib/router/index.js:280:5)
    这是我项目的截图。我从始至终的文件里都没有写layout，但是它却要去找layout文件，让我很想不明白，这是为什么？

Answer 1

你写html页面元素是完整的吗？会不会你没有写头元素之类的？