Uncaught (in promise) Error: Could not find module `@ember/test-waiters` imported from `ember-cli-new-version/services/new-version`

Getting this error at runtime after I upgraded to ember-cli 5.12.

Using 5.0.0 of ember-cli-new-version.

```
Uncaught (in promise) Error: Could not find module `@ember/test-waiters` imported from `ember-cli-new-version/services/new-version`
```