Cannot install @angular/pwa in Ionic project

I cannot install @angular/pwa in Ionic project.

My current versions:

Angular version: 15.2.5
Ionic CLI: 5.4.16
ionic Framework: @ionic/angular 6.7.3
@angular-devkit/build-angular: 15.2.5
@angular-devkit/schematics: 15.2.5
@angular/cli: 15.2.5
@ionic/angular-toolkit: 9.0.0
Node version: 16.17.0
NPM version: 9.6.4

When I run “ng add @angular/pwa” it says:
Packages successfully installed.
Bootstrap call not found.

No manifest/service workers are added to my project.

However, when I run the “ng add @angular/pwa” command in an Angular project it installs successfully.

Does anyone have a suggestion on how to get pass the bootstrap warning and get pwa installed properly in my Ionic project?

Update: Seems like installing the next version fixed the installation issue: “ng add @angular/pwa@next”.

Looks like this is a known bug in @angular/pwa: PWA ng-add schematic does not work if bootstrapApplication is used (standalone) · Issue #23316 · angular/angular-cli · GitHub

Using the next tag contains a fix for the issue.