Added check for unknown traders size

app.py

@@ -303,40 +303,41 @@ with demo:
                 outputs=[trade_no_details_plot],
             )
             # Unknown traders graph
-            with gr.Row():
-                gr.Markdown(
-                    "# Weekly trading metrics for trades coming from unknown traders"
-                )
-            with gr.Row():
-                trade_u_details_selector = gr.Dropdown(
-                    label="Select a trade metric",
-                    choices=trade_metric_choices,
-                    value=default_trade_metric,
-                )
+            if len(unknown_trades) > 0:
+                with gr.Row():
+                    gr.Markdown(
+                        "# Weekly trading metrics for trades coming from unknown traders"
+                    )
+                with gr.Row():
+                    trade_u_details_selector = gr.Dropdown(
+                        label="Select a trade metric",
+                        choices=trade_metric_choices,
+                        value=default_trade_metric,
+                    )
 
-            with gr.Row():
-                with gr.Column(scale=3):
-                    trade_u_details_plot = plot_trade_metrics(
-                        metric_name=default_trade_metric,
+                with gr.Row():
+                    with gr.Column(scale=3):
+                        trade_u_details_plot = plot_trade_metrics(
+                            metric_name=default_trade_metric,
+                            trades_df=unknown_trades,
+                            trader_filter="all",
+                        )
+                    with gr.Column(scale=1):
+                        trade_details_text = get_trade_metrics_text()
+
+                def update_na_trade_details(trade_detail, trade_u_details_plot):
+                    new_u_plot = plot_trade_metrics(
+                        metric_name=trade_detail,
                         trades_df=unknown_trades,
                         trader_filter="all",
                     )
-                with gr.Column(scale=1):
-                    trade_details_text = get_trade_metrics_text()
+                    return new_u_plot
 
-            def update_na_trade_details(trade_detail, trade_u_details_plot):
-                new_u_plot = plot_trade_metrics(
-                    metric_name=trade_detail,
-                    trades_df=unknown_trades,
-                    trader_filter="all",
+                trade_u_details_selector.change(
+                    update_na_trade_details,
+                    inputs=[trade_u_details_selector, trade_u_details_plot],
+                    outputs=[trade_u_details_plot],
                 )
-                return new_u_plot
-
-            trade_u_details_selector.change(
-                update_na_trade_details,
-                inputs=[trade_u_details_selector, trade_u_details_plot],
-                outputs=[trade_u_details_plot],
-            )
 
         with gr.TabItem("🔒 Staking traders"):
             with gr.Row():