Damn this is just sad. Abbath has been battling various health problems and addictions for some time. Like, Azazel's frontman Lord Satanacchia was drunk as fuck in that viral video from their 2017 Steelfest gig, but at least the band finished their set.

And in case you fellas need some context: https://chaoszine.net/the-bad-luck-of-saarihelvetti-abbath-and-more-cancel-performances/