the <leader>j and <leader>i of the minimal configration doesn't work

[mahaaaham]

Im using vim 8.1 with fedora.

Putting: " JK motions: Line motions map <Leader>j <Plug>(easymotion-j) map <Leader>k <Plug>(easymotion-k

In my .vimrc doesn't do anything and even desactivate the use of j and k .

This is not a big deal but I absolutely don't understand why. I tried to map others inputs than "j" and "k", but the result is the same.