Steps to reproduce

1. Upload an asset to Celum
2. Reference the asset from Magnolia using a component dialog (e.g. text/image component)
3. Delete the asset from Celum
4. Open the component dialog to change the asset reference

.. Logs, screenshots, gifs...

Expected results

.. User can change the asset reference even when the asset is not available in Celum enymore

Actual results

getName throws an NPE when the asset cannot be retrieved from Celum during opening the dialog

Workaround

Development notes