simplify with kron doesn't work anymore in the symbolic package

[gmelard]

Simplification of an expression involving "kron" doesn't work anymore in the symbolic package
Line 46 is
Hcal(z) = kron(Gcal(z)*Sigmasqrt,transpose(inv(B(z)))*inv(Sigmasqrt))
where I had previously defined "syms Gcal Kcal sigma Pcal Qcal", In = eye(n), and Sigmasqrt = In
Line 47 is
Hcal(z) = simplify(Hcal(z))
I had the mistake when simplify was in line 46 so I broke the instruction in two parts and it is simplify that doesn't work.
This worked in version 8.2.
Here are the error messages:
error: Python exception: NameError: name 'TensorProduct' is not defined
occurred while copying variables to Python.
Try "sympref reset" and repeat your command?
(consider filing an issue at https://github.com/gnu-octave/symbolic/issues)
error: called from
pycall_sympy__ at line 192 column 5
subs at line 269 column 5
subsref at line 46 column 11
E:/MELARD/RECH/KLE/25KM25/NewARMAEx0GLv9 - Octave.m at line 47 column 9
To try a workaround, I deleted Line 47 but then the same mistake occurs on the next instruction
[NHcal(z), DHcal(z)] = numden(Hcal(z))