When system (Windows) crashes with Illustrator open, any placed or linked images are missing in the recovery file, thus rendering it unusable.
Warning appears, asking me to relink " " file (even if the linked file has a name), which I can't do due to missing information. Link palette is not displaying any information on what file it was either.
I have never seen this bug before, but it has happened the last two times for me, and is very unfortunate.

Windows 10 Enterprise
Illustrator CC 25.2.1