Update app/stocks.py

app/stocks.py

@@ -42,7 +42,7 @@ def get_stock_data(name, start, end):
 
     df = adj_df if name in adj_df['SYMBOL'].values else df
 
-    df = df.query('SYMBOL == @name').copy()
+    df = df.query('SYMBOL == @name')
 
     if start and end:
         df = df.loc[(df['DATE'] >= start) & (df['DATE'] <= end)]