Disk or partition space is insufficient

I followed
"How to use WinToUSB to clone Windows 10 to an external hard drive as portable Windows 10"

System partition 200MB Fat32
boot partition NTFT of over 200 GB
Trying to clone a 100GB installed OS
Used an external SanDisk USB3 SSD drive of 250GB

Also Tried with a 500GB usb external disk and got the same error, so it looks the the size is not the issue

Log included

  user.zip (Size: 2.62 KB / Downloads: 0)