Unable to use shape_optimization.py for tutorial unsteady problem when adding constraints of area or thickness

[HANSIeltsKing]

When I use shape_optimization.py to optimize an airfoil in the tutorials, I cannot put thickness and area as constrants due to this error:

Traceback (most recent call last):
  File "/.../shape_optimization.py", line 183, in <module>
    main()
  File "/.../shape_optimization.py", line 92, in main
    shape_optimization( options.filename    ,
  File "/.../shape_optimization.py", line 110, in shape_optimization
    config = SU2.io.Config(filename)
  File "/.../SU2/io/config.py", line 123, in __init__
    tavg_keyGroup = "TAVG_" + historyOutFields[key_inner]["GROUP"]
KeyError: 'AREA'

However, adding the constraint of lift or drag can work well.
But the area and thickness can be found in config_template.
How can I solve this problem? Thank you very much.