I am also struggling with the same issue. i have created a space on HF and created a chat app which works but then i am struggling to use curl to get a response, i posted this HuggingFaceH4/zephyr-7b-beta · Getting NULL response using curl or PHP for help. hope a response here or on my post will help. Not sure there is anyone here who knows the solution, especially due to lack of docs and support. 
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