cant activate livelink stream

[sawk1]

i am repeating the code from demo video, and my audio played in the audio2face interface, but when im trying to activate live link stream i have this error - [StreamLivelink] the BLANDSHAPE NAMES input is empty. Please connect or enter a valid input before activating the stream
but if i click exmples -> mark_solved_arkit - stream works perfectly fine, so i think its a .usd file problem, but im not sure