rsync error: remote command not found (code 127) at io.c(235) [sender=3.1.2] [closed]

I am using the command as below

rsync -a --ignore-existing  /users/phd/muzafarwan/WRF   [email protected]:

and the error I am getting is as below

rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: remote command not found (code 127) at io.c(235) [sender=3.1.2]


Please read the error message carefully. It says exactly what the problem is.

Remember that rsync over ssh works by running rsync and both ends, and having them communicate over a secure ssh tunnel. Rsync has to be installed on local and remote end.