If you use Symbol('h', real=True) as a parameter in your model you get an error

[moorepants]

ImportError: Unable to import the compiled Cython module ufuncify_matrix_1, compilation likely failed. STDERR output from compilation:
/home/moorepants/miniconda/envs/opty-dev/lib/python3.12/site-packages/Cython/Compiler/Main.py:381: FutureWarning: Cython directive 'language_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: /tmp/tmp0scriqjd.opty_ufuncify_compile/ufuncify_matrix_1.pyx
  tree = Parsing.p_module(s, pxd, full_module_name)

Error compiling Cython file:
------------------------------------------------------------
...
                     double m,
                     double l,
                     double w,
                     double h,
                     double g,
                     double h):
                     ^
------------------------------------------------------------

ufuncify_matrix_1.pyx:85:21: 'h' redeclared 

Error compiling Cython file:
------------------------------------------------------------
...
                     np.ndarray[np.double_t, ndim=1] F3i,
                     np.ndarray[np.double_t, ndim=1] F4i,
                     double m,
                     double l,
                     double w,
                     double h,
                     ^
------------------------------------------------------------

ufuncify_matrix_1.pyx:83:21: Previous declaration is here
Traceback (most recent call last):
  File "/tmp/tmp0scriqjd.opty_ufuncify_compile/ufuncify_matrix_1_setup.py", line 14, in <module>
    ext_modules=cythonize([extension]))
                ^^^^^^^^^^^^^^^^^^^^^^
  File "/home/moorepants/miniconda/envs/opty-dev/lib/python3.12/site-packages/Cython/Build/Dependencies.py", line 1154, in cythonize
    cythonize_one(*args)
  File "/home/moorepants/miniconda/envs/opty-dev/lib/python3.12/site-packages/Cython/Build/Dependencies.py", line 1321, in cythonize_one
    raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: ufuncify_matrix_1.pyx