Ionic Add requires a project type of "application"

**Description:**

When I execute "npx schematics @ionic/angular:ng-add" command I get error:
Error: Ionic Add requires a project type of "application".
at D:\mysoftware\scada2\mobile\scada\node_modules\@ionic\angular\schematics\add\index.js:103:19

**Output:**

**My `ionic info`:**

```
ionic + angular：
@angular-devkit/schematics-cli: "^13.2.0",
@angular/animations: "~13.1.0",
@angular/common: "~13.1.0",
@angular/compiler: "~13.1.0",
@angular/core: "~13.1.0",
@angular/forms: "~13.1.0",
@angular/platform-browser: "~13.1.0",
@angular/platform-browser-dynamic: "~13.1.0",
@angular/router: "~13.1.0",
@ionic/angular: "^6.0.4",
rxjs: "~7.4.0",
tslib: "^2.3.0",
zone.js: "~0.11.4"
typescript: "~4.5.2"

nodejs：v16.13.2
OS：windows 10
npm：8.1.2
```

**Other Information:**