fix >/< keybinds

src/handler.rs

@@ -275,13 +275,17 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
 
             // Play next song
             KeyCode::Char('>') => {
+                if !app.queue_list.list.is_empty() {
                     app.conn.conn.next()?;
                 }
+            }
 
             // Play previous song
             KeyCode::Char('<') => {
+                if !app.queue_list.list.is_empty() {
                     app.conn.conn.prev()?;
                 }
+            }
 
             // Volume controls
             KeyCode::Char('=') => {