I keep getting this crash report on Minecraft 1.13 whenever I load a world. Any ideas on how I could fix this? [duplicate]

It seems Minecraft ran out of memory.
Edit your launcher profile and at the bottom, should be "Java Settings". In "JVM Arguments", change the value of RAM you are assigning:

Example: "-Xmx1G" to "-Xmx2G". Just make sure you don't add RAM you don't have installed.

It can also be that you don't have enough RAM installed on your PC.