Knit function not working on Sonic Tau

I tested the code below (which is presented in the documentation), but it does not run on the editor:

live_loop :rhythm do

sample knit(:bd_haus, 3, :sn_dolf, 1).tick

sleep 0.25

end

There’s an error message:

unknown sample :

I tried to edit the code but the same error kept appearing:

use_bpm 123

live_loop :rhythm do

sample knit(:ambi_piano, 3, :elec_beep, 1).tick

sleep 0.25

end