Running optimize.py issue

[Marilia Fagundes]

I am running into a problem trying to run the optimize.py file. I created a script very similar to the Regional_Jet_Optimization tutorial, but when I try to run it, I get the following error:

"problem.inputs = np.array([
TypeError: getattr expected at least 2 arguments, got 1"

My variable problem.inputs is defined as follows:

problem.inputs = np.array([
        [ 'chord_root'                  ,     46.668395125745384   ,    30. ,   90.    ,    10.    , Units.inches],
        [ 'taper'                       ,   0.9  ,    0.3 ,   0.1    ,      1.     , Units.less],
        [ 'wing_span'                   ,   40.6    ,    30. ,   45.    ,     10.    , Units.feet],
       
    ],dtype=object)

Does anyone know why I might be running into this issue? The formatting of the variable seems similar to the one used in the tutorial.

Thank you in advance for your help!