Troubled by scene with linked assets

Hi. I am linking some assets from different files. I am a bit confused about it. I had a linked whale. Not sure why; the whale is gone now. I can see the empty at the origin of the whale, but not the whale itself.

This is my outliner:
outliner

I tried going to blender file in the display options:

outliner_2

After “relocate” I get this message in the system console:

AttributeError: ‘NoneType’ object has no attribute ‘type’
Warning: Invalid anchor (‘OBWHALE’) found, needed to create library override from data-block ‘GRWHALE’

Do you know how I can fix this?

Thank you