[bug fix] set floor fees when no estimation from core

src/main.rs

@@ -255,8 +255,9 @@ fn faucet_send(
 
         let fee_estimate = shared_daemon
             .lock_anyhow()?
-            .estimate_fee(6)?
-            .unwrap_or(Amount::from_sat(1000))
+            .estimate_fee(6)
+            .unwrap_or(Some(Amount::from_sat(1000)))
+            .unwrap()
             .checked_div(1000)
             .unwrap();