Got error when using theano

[Freakwill]

I got error when using theano by configuring .kreras/keras.json file

Using Theano backend.
Loading cora dataset...
Dataset has 2708 nodes, 5429 edges, 1433 features.
Using local pooling filters...
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/keras/engine/base_layer.py", line 310, in assert_input_compatibility
K.is_keras_tensor(x)
File "/usr/local/lib/python3.7/site-packages/keras/backend/theano_backend.py", line 225, in is_keras_tensor
str(type(x)) + '. ' ValueError: Unexpectedly found an instance of type <class 'theano.sparse.basic.SparseVariable'>`. Expected a symbolic tensor instance.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/.../train.py", line 56, in
H = GraphConvolution(16, support, activation='relu', kernel_regularizer=l2(5e-4))([H]+G)
File "/usr/local/lib/python3.7/site-packages/keras/engine/base_layer.py", line 446, in call
self.assert_input_compatibility(inputs)
File "/usr/local/lib/python3.7/site-packages/keras/engine/base_layer.py", line 316, in assert_input_compatibility
str(inputs) + '. All inputs to the layer '
ValueError: Layer graph_convolution_1 was called with an input that isn't a symbolic tensor. Received type: <class 'theano.sparse.basic.SparseVariable'>. Full input: [if{}.0, SparseVariable{csr,float32}]. All inputs to the layer should be tensors.