Bug Report or Feature Request (mark with anx)

- [x] bug report -> please search issues before submitting- [ ] feature request

OS and Version?

Catalina 10.15.7

Versions

Angular CLI: 11.0.2
Node: 14.14.0
OS: darwin x64

Repro steps

From the CLI, enterng add ngx-auth-firebaseui

The log given by the failure

Installing packages for tooling via npm.
Installed packages for tooling via npm.
An unhandled exception occurred: Cannot find module '@schematics/angular/utility/json-utils'
Require stack:

• /Users/TDK/angularfire/node_modules/ngx-auth-firebaseui/schematics/helpers/angular/json-utils.js
• /Users/TDK/angularfire/node_modules/ngx-auth-firebaseui/schematics/helpers/angular/index.js
• /Users/TDK/angularfire/node_modules/ngx-auth-firebaseui/schematics/helpers/index.js
• /Users/TDK/angularfire/node_modules/ngx-auth-firebaseui/schematics/ng-add/index.js
• /Users/TDK/angularfire/node_modules/@angular-devkit/schematics/tools/export-ref.js
• /Users/TDK/angularfire/node_modules/@angular-devkit/schematics/tools/index.js
• /Users/TDK/angularfire/node_modules/@angular/cli/utilities/json-schema.js
• /Users/TDK/angularfire/node_modules/@angular/cli/models/command-runner.js
• /Users/TDK/angularfire/node_modules/@angular/cli/lib/cli/index.js
• /Users/TDK/.nvm/versions/node/v14.14.0/lib/node_modules/@angular/cli/lib/init.js
• /Users/TDK/.nvm/versions/node/v14.14.0/lib/node_modules/@angular/cli/bin/ng
  See "/private/var/folders/dv/x8kx3wkj0tj08gcq1csnk4jm0000gp/T/ng-fuBnGr/angular-errors.log" for further details.

Desired functionality

I want to install ngx-auth-firebaseui.

Mention any other details that might be useful

First time using this package. I'll try installing with npm.