Issue with -U usernames.txt

[kpomeroy1979]

On Windows 10

When I run the script and specify -u username@domain.com it validates
When I run the script and specify -U usernames.txt it does not work. Error is "[WinError 2] The system cannot find the file specified
Whoops something happened there with a userfile"

I can 100% guarantee the 'usernames.txt' file is there

Any ideas?

[kpomeroy1979]

I tested the exact same thing on Kali Linux and it works with the -U usernames.txt flag so must be something up with the Windows version.