in src/lib.rs [243:252]
fn convert_pt_scalar_to_u8(&self, pt: FVPlaintext<T>) -> DefaultFVPlaintext{
if T::to_u64(&self.t) != 256u64{
panic!("plaintext modulus should be 256")
}
let mut pt1 = vec![];
for pt_coeff in pt.iter(){
pt1.push(T::to_u64(pt_coeff) as u8);
}
pt1
}