Update app.py

app.py

@@ -120,7 +120,7 @@ def plot_combined_data(data, title):
     for ticker, df in data.items():
         if not df.empty:
             df = df.set_index("Date").reindex(all_dates).reset_index()
-            combined_df[ticker] = df["Close"].values
+            combined_df[ticker] = df["Close"].values.flatten()
     # Melt and plot
     if not combined_df.empty:
         combined_df = combined_df.melt(id_vars=["Date"], var_name="Symbol", value_name="Price")