As mentioned before:
"If you cannot find/recover the missing file, then attach "Windows 10 x64.vmdk" which contains information needed to create a replacement file."
What's needed is a .vmdk file that can hold the same capacity. The block sizes for all the "-s0xx.vmdk" are shown in the descriptor .vmdk file. So what's required as a replacement for the missing file, is file with the same number of blocks.
Hint: once the file exists, take a VM snapshot prior to powering on the VM. This way you can always revert back to the current state, in case you need to.
André