Download World Option keeps crashing switch (lite)

Every time I try to download the world from my realm it always shows the loading screen and loads to 513MB out of 535MB before crashing - saying that "the software was closed because an error occurred".

I have deleted data to make enough space (to allow it to start downloading), and done things to try and fix it (clearing my cache, restarting my switch, re-downloading the software, etc) and none of it has worked. It keeps crashing. There are no updates available.