Update core/visualizations.py

core/visualizations.py

@@ -1,5 +1,5 @@
 """
-Enhanced investor-grade visualizations
+Enhanced investor-grade visualizations - FIXED VERSION
 """
 
 import plotly.graph_objects as go
@@ -106,7 +106,27 @@ class EnhancedVisualizationEngine:
         return fig
     
     def create_executive_dashboard(self, user_roi: Optional[Dict] = None) -> go.Figure:
-        """Create comprehensive executive dashboard"""
+        """Create comprehensive executive dashboard - FIXED VERSION"""
+        # FIX: Handle None or empty user_roi
+        if user_roi is None:
+            user_roi = {}
+        
+        # Get ROI value safely
+        roi_value = user_roi.get('roi_multiplier', 5.2)
+        
+        # If roi_value is a string with "×", convert it
+        if isinstance(roi_value, str):
+            if "×" in roi_value:
+                try:
+                    roi_value = float(roi_value.replace("×", ""))
+                except:
+                    roi_value = 5.2
+            else:
+                try:
+                    roi_value = float(roi_value)
+                except:
+                    roi_value = 5.2
+        
         fig = make_subplots(
             rows=2, cols=2,
             subplot_titles=(
@@ -183,8 +203,6 @@ class EnhancedVisualizationEngine:
         )
         
         # 4. ROI Gauge
-        roi_value = user_roi.get('roi_multiplier', 5.2) if user_roi else 5.2
-        
         fig.add_trace(
             go.Indicator(
                 mode="gauge+number+delta",