When server or a player tries to kick player, server crashes

I place in paperspigot matrix anticheat, it tried to kick hacker and server went down
I am not eng, sorry, and if I wrote to the wrong forum, please, give me the link to the right forum.Latest.log on Google drive

Caused by plugin and outdated server software. We are unable to help with 1.8. You will need to find a project that is maintaining a 1.8 fork.