runtime error

/keras/src/saving/serialization_lib.py", line 694, in deserialize_keras_object cls = _retrieve_class_or_fn( File "/usr/local/lib/python3.9/site-packages/keras/src/saving/serialization_lib.py", line 812, in _retrieve_class_or_fn raise TypeError( TypeError: Could not locate class 'Sequential'. Make sure custom classes are decorated with `@keras.saving.register_keras_serializable()`. Full object config: {'class_name': 'Sequential', 'config': {'name': 'sequential_2', 'layers': [{'module': 'keras.layers', 'class_name': 'InputLayer', 'config': {'batch_input_shape': [None, 2], 'dtype': 'float32', 'sparse': False, 'ragged': False, 'name': 'dense_5_input'}, 'registered_name': None}, {'module': 'keras.layers', 'class_name': 'Dense', 'config': {'name': 'dense_5', 'trainable': True, 'dtype': 'float32', 'batch_input_shape': [None, 2], 'units': 16, 'activation': 'relu', 'use_bias': True, 'kernel_initializer': {'module': 'keras.initializers', 'class_name': 'GlorotUniform', 'config': {'seed': None}, 'registered_name': None}, 'bias_initializer': {'module': 'keras.initializers', 'class_name': 'Zeros', 'config': {}, 'registered_name': None}, 'kernel_regularizer': None, 'bias_regularizer': None, 'activity_regularizer': None, 'kernel_constraint': None, 'bias_constraint': None}, 'registered_name': None, 'build_config': {'input_shape': [None, 2]}}, {'module': 'keras.layers', 'class_name': 'Dense', 'config': {'name': 'dense_6', 'trainable': True, 'dtype': 'float32', 'units': 1, 'activation': 'sigmoid', 'use_bias': True, 'kernel_initializer': {'module': 'keras.initializers', 'class_name': 'GlorotUniform', 'config': {'seed': None}, 'registered_name': None}, 'bias_initializer': {'module': 'keras.initializers', 'class_name': 'Zeros', 'config': {}, 'registered_name': None}, 'kernel_regularizer': None, 'bias_regularizer': None, 'activity_regularizer': None, 'kernel_constraint': None, 'bias_constraint': None}, 'registered_name': None, 'build_config': {'input_shape': [None, 16]}}]}, 'keras_version': '2.15.0', 'backend': 'tensorflow'}

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