My server crashes out of the blue, it doesnt matter how many people are online or what we are doing, it just "happens". Generally the server doesnt get any lag but sometimes it does when were exploring and stuff like that, i used spark to figure that one out. i changed the max tick time to -1 to see if that works but it doesnt seem to have fixed anything.
Here I'll leave you the crashreport and log.
https://paste.ee/p/GJTbh