added debug mechanism

main.py

@@ -7,6 +7,8 @@ from transportEqs import *
 import numpy as np
 from Kps_function.read_Kps_model import *
 import os
+from dash import no_update
+import traceback, time
 
 app = Dash(
     __name__,
@@ -587,6 +589,19 @@ app.layout = html.Div(
                         ),
                     ],
                 ),
+                html.Pre(
+                    id="mm0_debug",
+                    style={
+                        "whiteSpace": "pre-wrap",
+                        "fontSize": "12px",
+                        "maxHeight": "260px",
+                        "overflowY": "auto",
+                        "border": "1px solid #ddd",
+                        "padding": "8px",
+                        "marginTop": "10px",
+                        "backgroundColor": "#fafafa",
+                    },
+                ),
             ],
         ),
     ],
@@ -630,6 +645,7 @@ def toggle_condition2_inputs(mode):
 
 @app.callback(
     Output("mm0_chart", "figure"),
+    Output("mm0_debug", "children"),
     Input("calculate", "n_clicks"),
     State("matrix", "value"),
     State("tg", "value"),
@@ -733,7 +749,15 @@ def update_chart(n_clicks,
     df['Cond2_err_plus'] = uppers - medians
     df['Cond2_err_minus'] = medians - lowers
 
-    return build_figure(df)
+    t0 = time.time()
+    try:
+        # your current code
+        fig = build_figure(df)
+        return fig, f"OK in {time.time() - t0:.2f}s"
+    except Exception:
+        return no_update, traceback.format_exc()
+
+    #return build_figure(df)
 
 def ConservativeMonteCarlo(soluteData, CHRIS_category, L, time, N):