Tensorflor/TFLearn Cannot feed value of shape

I want to do the tensorflow example "Boston housing prices" in TFLearn. But I get shape error.

Here is my code:

    import tflearn   
    from tflearn.data_utils import load_csv

    data, target = load_csv('boston_train.csv', has_header=True)  
    input_ = tflearn.input_data(shape=[None, 9])   
    linear = tflearn.fully_connected(input_, 9)   
    regression = tflearn.regression(linear, optimizer='sgd', loss='mean_square', learning_rate=0.01)     
    m = tflearn.DNN(regression)
    m.fit(data, target, n_epoch=10, batch_size=10, show_metric=True)

I get following error:

    ValueError: Cannot feed value of shape (10,) for Tensor 'TargetsData/Y:0', which has shape '(?, 9)'

The csv file has 9 features and one label column.
What should I do?