((In response to Ulfarr's accusation of purely serving a narrative, which I wouldn't dismiss as being part of it, but...))
All I've seen as a 'report' is:
Ukrainian government reports that the Chernobyl Nuclear Plant has lost power due to damage to an high voltage power line to Kyiv. They state this could potentially impact the cooling of spent fuel assemblies and lead to nuclear discharge.
...unless you're saying it can
not potentially impact the cooling (...etc), Ulfarr, I'm not sure what you're getting animated about.
I will confidently state that it can do this. That it's always a risk, though usually a minor one in modern times when old mistakes (Windscale, Three-Mile Island, Fukushima, etc, and Chernobyl itself of course) have been learnt from and caution is now the watchword in any mature nuclear-operator. Maybe more risky in 'up-and-coming' places with other concerns (Iran, NK...).
In an active war-zone, with prior incident-damage to look after and limited to whatever resources are already on site, yes, there's potential problems at the most basic level (the cooling) that
could escalate to further problems.
Better to say this than to ignore it/do the "This is fine" thing. It might be worse at a more recently active power-plant (like Zaporizhzhia, which had all six reactors active within the last month and
did have initially worrying damage done to some of its auxilliary infrastructure), or if the Sarcophagus[1] were not there to do its intended job.
[1] Not armoured against attack, but at least preventing further casual damage to the Soviet-era reactor buildings damaged in the original incident by careless invaders.