Board Thread:Bug Reports/@comment-81.111.115.70-20190928154801/@comment-27219153-20191007213441

As HubToo stated the answer is in the first 5 lines.

Minecraft Crash Report

// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 28/09/19 16:46

Description: Exception in server tick loop

java.lang. OutOfMemoryError : Java heap space

Hopefully that makes it clear and you know how to give it more memory.