TypeError: __init__() takes exactly 2 arguments (1 given)

[SeekPoint]

rzai@rzai00:/prj/visual-qa/scripts$ CUDA_VISIBLE_DEVICES=1 python trainLSTM_1.py
Using Theano backend.
Using gpu device 0: GeForce GTX 1080 (CNMeM is disabled, cuDNN 5105)
Traceback (most recent call last):
File "trainLSTM_1.py", line 122, in
main()
File "trainLSTM_1.py", line 59, in main
image_model.add(Reshape(input_shape = (img_dim,), dims=(img_dim,)))
TypeError: init() takes exactly 2 arguments (1 given)
rzai@rzai00:/prj/visual-qa/scripts$