Looks like the accident report for the Jetline accident at Grona Lund came out - and there's a Coaster College video going over it: https://www.youtube.com/watch?v=kMh0imnNGck

(For those unfamiliar, Coaster College is pretty much the one channel that does in-depth and accurate analysis videos about ride accidents, with none of the sensationalism and hyperbole that you see on other channels)