Fix spawning

src/engine/main.rs

@@ -7,11 +7,16 @@ pub mod terminal;
 async fn main() -> tokio::io::Result<()> {
     let engine = engine::Engine::new().await?;
 
-    engine.spawn_terminal_server().await?;
+    let terminal_server = engine.spawn_terminal_server().await;
 
-    engine.spawn_broadcaster().await?;
+    let broadcaster = engine.spawn_broadcaster().await;
 
     engine.run_engine().await?;
 
+    let (terminal_server, broadcaster) = tokio::join!(terminal_server, broadcaster);
+
+    terminal_server??;
+    broadcaster??;
+
     Ok(())
 }