Update app.py

app.py

@@ -33,6 +33,7 @@ try:
     )
 except Exception as e:
     st.error(f"Failed to connect to Salesforce: {str(e)}")
+    logger.error(f"Salesforce connection failed: {str(e)}")
     sf = None
 
 # Title
@@ -253,12 +254,20 @@ if submit_button:
             <canvas id="{chart_id}" style="max-height: 200px; max-width: 600px;"></canvas>
             <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
             <script>
-                const ctx = document.getElementById('{chart_id}').getContext('2d');
-                new Chart(ctx, {json.dumps(chart_config)});
+                try {{
+                    const ctx = document.getElementById('{chart_id}').getContext('2d');
+                    new Chart(ctx, {json.dumps(chart_config)});
+                }} catch (e) {{
+                    console.error('Chart.js failed: ' + e);
+                }}
             </script>
             """
-            components.html(chart_html, height=250)
-            logger.info("Chart.js heatmap rendered")
+            try:
+                components.html(chart_html, height=250)
+                logger.info("Chart.js heatmap rendered")
+            except Exception as e:
+                logger.error(f"Chart.js rendering failed: {str(e)}")
+                st.error("Failed to render heatmap; please check your browser settings.")
             
             # Generate matplotlib figure for PDF
             fig, ax = plt.subplots(figsize=(8, 2))