That was my first thought, but my takeaway from reading the article is that they weren't doing cremations in-house or on site, but had to pay another company for the work. It mentions that they were slapped with a judgement for failing to pay for approximately 200 other cremations already.

From an engineering "normalisation of deviance" pov, I really can't imagine how things cascade so badly you end up with 190 human bodies piled in a room.