Update app.py

app.py

@@ -2206,7 +2206,7 @@ class WorkflowVisualizer:
                 
                 row.append(value)
             data.append(row)
-        
+
         # Create heatmap
         fig = go.Figure(data=go.Heatmap(
             z=data,
@@ -2216,7 +2216,7 @@ class WorkflowVisualizer:
             text=np.round(data, 2),
             texttemplate='%{text}',
             textfont={"size": 12},
-            colorbar=dict(title="Score", titleside="right"),
+            colorbar=dict(title={'text': "Score", 'side': 'right'}),
             hoverongaps=False
         ))