Update app.py

app.py

@@ -94,10 +94,10 @@ st.plotly_chart(fig4)
 # Sentiment heatmap (fixed version)
 st.subheader("Sentiment Heatmap (Past 14 Days)")
 df['Day'] = df['Date'].dt.dayofweek  # Monday=0, Sunday=6
-heatmap_data = df.groupby('Day')['Sentiment Score'].mean().reset_index()
-heatmap_data = heatmap_data.pivot(index='Day', columns=None, values='Sentiment Score')
+heatmap_data = df.groupby('Day', as_index=False).agg({'Sentiment Score': 'mean'})
+heatmap_data = heatmap_data.pivot(index='Day', values='Sentiment Score')
 fig5 = px.imshow(
-    [heatmap_data.values], 
+    heatmap_data, 
     title="Heatmap of Sentiment Over Time", 
     labels={'x': 'Day of Week', 'y': 'Sentiment Score'}, 
     color_continuous_scale='RdBu'