[Bug]: ng add localization not working on libraries

[vscaiceanu-1a]

Package name

localization

Package version

10.2.1

Reproduction steps

npm create @o3r my-workspace
cd my workspace
ng g library my-lib
ng add @o3r/localization --project-name my-lib

Current result

Would you like to proceed? Yes
✔ Packages successfully installed.
    The package @o3r/localization comes with a debug mechanism
    Get information on https://github.com/AmadeusITGroup/otter/tree/main/docs/localization/LOCALIZATION.md#Debugging
Cannot read properties of null (reading 'toString')

Expected result

package is added correctly

Additional comments

No response