Large Maps not uploading

Currently I only have maps that are less than 3MB or more than 200MB - so i can't tell you the threshold. But the small maps upload without a problem, while large maps throw a "cannot import" error.

<img width="238" height="537" alt="Image" src="https://github.com/user-attachments/assets/bd9542f8-91c0-4099-9ce1-92a046c94e63" />