Update app.py

app.py

@@ -588,8 +588,9 @@ def server(input, output, session):
         colour_df = pd.DataFrame(data=[col_1_colour,col_2_colour,col_3_colour]).T.values
 
         if df_combined_t[df_combined_t.columns[2]].values[0] == 0:
+            
             for i in range(len(colour_df)):
-                colour_df[[i][1]] = 'white'
+                colour_df[[i],[1]] = 'white'
         
         colour_df[[0],[0]] = 'white'
         colour_df[[1],[0]] = 'white'