Update app.py

app.py

@@ -59,7 +59,7 @@ def stockprice(stockname,number_of_samples):
 
     pred_df.reset_index(inplace=True)
     pred_df = pred_df.rename(columns = {'index':'HOURS'})
-    pred_df.index = pred_df.index + 1
+    pred_df.index = pd.RangeIndex(start=1, stop=600, step=1)
     
     plt.figure(figsize=(15, 6))
     range_history = len(new_data)