let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
let (onion_payloads, _, htlc_cltv) = onion_utils::build_onion_payloads(
&route.paths[0], 40000, RecipientOnionFields::spontaneous_empty(), height, &None).unwrap();
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
let (onion_payloads, _, htlc_cltv) = onion_utils::build_onion_payloads(
&route.paths[0], 40000, RecipientOnionFields::spontaneous_empty(), height, &None).unwrap();