update utils

utils.py

@@ -385,7 +385,7 @@ def create_price_chart(data, indicators):
     fig.add_trace(
         go.Scatter(
             x=data.index,
-            y=indicators['macd']['macd_values'], # FIXED: Use full series
+            y=indicators['macd']['macd_values'], 
             name='MACD',
             line=dict(color='blue')
         ),
@@ -395,7 +395,7 @@ def create_price_chart(data, indicators):
     fig.add_trace(
         go.Scatter(
             x=data.index,
-            y=indicators['macd']['signal_values'], # FIXED: Use full series
+            y=indicators['macd']['signal_values'], 
             name='Signal',
             line=dict(color='red')
         ),
@@ -458,7 +458,8 @@ def create_technical_chart(data, indicators):
 
 def create_prediction_chart(data, predictions):
     """Create prediction visualization"""
-    if not predictions['values'].size:
+    # FIXED: Use len() check which works for both list and numpy array
+    if not len(predictions['values']):
         return go.Figure()
     
     fig = go.Figure()