I used to be able to play snapshots until today. Quite frustrating as I had one world I built just to test snapshots that broke recently with the drowned. I then tried to repair that as one had suggested but the crash remained. Then I began playing another world that I have played since I installed the vanilla version. It too, then eventually crashed as well with the same error with traceback as before. The was once again on the drowned vehicle entity. So I uploaded my log files to that thread and now found this new snapshot, hoping I may be able to open the last world.

I wasn't even able to complete the launcher, it crashes before I ever see the title screen. I also hope the performance was resolved as this ran much better on the MacMini under 1.12.2 with similar 60+ FPS but now it seems like it takes a really long time for chunks to load. I've had to remove 16x16 resource packs and even low end shaders as well just to play the snapshots. Something is definitely causing some issues. I will attach the performance from the last snapshot as I cannot launch this version at all. Also, not quite sure why I see a different JRE version running in the game as browser add on indicates the latest version.