Rdiff-backup on Windows to Linux

I want to start backing up all my files from my windows computer to a 5TB hardrive on my linux computer. Whenever I run this command

rdiff-backup C:\Users\mirad\Desktop\test.txt mirad@Ubuntu-Mirad::/media/mirad/Backups/Windows 

from my windows machine it gives this error

Fatal Error:

Couldn't start up the remote connection by executing

ssh -C mirad@Ubuntu-Mirad rdiff-backup --server

Remember that, under the default settings, rdiff-backup must be
installed in the PATH on the remote system.  See the man page for more
information on this.  This message may also be displayed if the remote
version of rdiff-backup is quite different from the local version (1.2.8).`

after running rdiff-backup -V on both systems I confirmed they are both running 1.2.8, and I have PuTTY installed on windows. What am I doing wrong?