InvalidArgumentError: cannot compute Mul as input #1(zero-based) was expected to be a float tensor but is a double tensor [Op:Mul]

[VQX]

tf.keras.backend.set_floatx('float32')
tf.keras.backend.set_floatx('float64')
I tried both , but didn’t worked
The tutorial does works if I run it as it is!

Here’s the output for qml.about():