I work with tensorflow-quantum and use
sympy for parameter updating.
Suddenly, without (manually) updating or changing anything this error comes up:
File "/home/eli/anaconda3/lib/python3.8/site-packages/tensorflow_quantum/core/serialize/serializer.py", line 93, in _symbol_extractor if isinstance(expr, sympy.mul.Mul): AttributeError: module 'sympy' has no attribute 'mul'
Has anyone had this before? Do you have any suggestions for what I can try to fix this?
I am working on Ubuntu 20.04.2 LTS TFQ version 0.4.0 Sympy version 1.8
the error occurs when I build my PQC layer:
model = tf.keras.Sequential([tf.keras.layers.Input(shape=(), dtype=tf.string), tfq.layers.PQC(circuit, [cirq.Z(q) for q in builder.get_valid_outputs()]), ], name = model_type)
and it worked like this a long time.