Boot Camp Assistant stuck at Partitioning disk...

I know this is duplicate but I read some similar discussions and they involving terminal commands and I may have different situation with my device, so I decided to ask.

The progress bar doesn't move at all.

It stack after I inserted flash drive into macbook.

Please help me, I don't want to loose my data.

Info:

Win10 iso name: Win10_2004_English_x64.iso