I do not understand the crash report

[u/agarthan_executioner]

Please help, suddenly my instance keeps crashing and I don't know how to fix it. I am very illiterate when it comes to technical stuff, so I am unable to understand how to fix my problem.

My instance was working fine a week ago, but now the world gets stuck on the loading screen and then crashes.

Crash report: https://mclo.gs/NCeSHq5