Error when checking input in validate_rnn.py

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