升级到Angular 9后，命令“ ng lint --fix”出现问题

Question

我收到此错误：

[error] Error: Unable to find TSLint. Ensure TSLint is installed.
    at _loadTslint (C:\urm\workspace\project\src\main\ngapp\node_modules\@angular-devkit\build-angular\src\tslint\index.js:22:15)
    at process._tickCallback (internal/process/next_tick.js:68:7)
    at Function.Module.runMain (internal/modules/cjs/loader.js:832:11)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)

任何想法，如果不自己安装怎么办？升级之前一切正常。