Error when checking input in validate_rnn.py

[AvaniPitre]

Hello I have successfully trained with lstm and trying to run validate_rnn.py
getting the following input shape error.. Please guide … How I need to make changes input?
Traceback (most recent call last):
File "validate_rnn.py", line 55, in
main()
File "validate_rnn.py", line 52, in main
image_shape=image_shape, class_limit=4)
File "validate_rnn.py", line 34, in validate
val_samples=3200)
File "C:\venv\lib\site-packages\keras\legacy\interfaces.py", line 88, in wrapper
return func(*args, **kwargs)
File "C:\venv\lib\site-packages\keras\engine\training.py", line 2021, in evaluate_generator
outs = self.test_on_batch(x, y, sample_weight=sample_weight)
File "C:\venv\lib\site-packages\keras\engine\training.py", line 1678, in test_on_batch
check_batch_axis=True)
File "C:\venv\lib\site-packages\keras\engine\training.py", line 1311, in _standardize_user_data
exception_prefix='input')
File "C:\venv\lib\site-packages\keras\engine\training.py", line 127, in _standardize_input_data
str(array.shape))
ValueError: Error when checking input: expected input_1 to have 4 dimensions, but got array with shape (32, 40, 2048)

I am new to deeplearing
Anyone one please help

Thanks in advance