ValueError Traceback (most recent call last)<ipython-input-34-5f15418b3570> in <module>----> 1 model.summary()C:\Anaconda3\lib\site-packages\keras\engine\network.py in summary(self, line_length, positions, print_fn) 1250 if not self.built: 1251 raise ValueError(-> 1252 'This model has not yet been built. ' 1253 'Build the model first by calling build() ' 1254 'or calling fit() with some data. 'ValueError: This model has not yet been built. Build the model first by calling build() or calling fit() with some data. Or specify input_shape or batch_input_shape in the first layer for automatic build.