我已经在angular 7和ionic 4上创建了一个应用程序。我试图编辑app.routing.ts文件，设置路径和组件。从那时起，我在下面收到此错误：
ERROR in ./src/app/department/department.module.ts
[ng] Module build failed (from ./node_modules/@ngtools/webpack/src/index.js):
[ng] Error: ENOENT: no such file or directory, open 'C:\Users\x\department\department.module.ts'
[ng] at Object.openSync (fs.js:436:3)
[ng] at Object.readFileSync (fs.js:341:35)
[ng] at Storage.provideSync (C:\Users\x\node_modules\enhanced-resolve\lib\CachedInputFileSystem.js:98:13)