Hello Benjamin Masutsubo,
Welcome to Microsoft Q&A forum.
In this situation, usually clean up space of your drive is the correct approach. Minecraft world is usually stored locally in the C: drive, so you should consider clean the files in it.
However, I will need a better view of this to know for sure if this is really the case of the C: drive run out of space. Can you please go to File Explorer > My computer and check the drive?
I'm waiting for your reply.