(cd run_fmpy-fmi3-cs-cvode && python3 -m fmpy simulate --output-file ../Buildings_latest_Buildings.Utilities.IO.Python_3_12.Functions.Examples.ExchangeWithPassPythonObject_fmpy-fmi3-cs-cvode_res.csv --output-variables 'yR1[1]' 'yR2[1]' yR1 yR2 --start-time 0 --stop-time 1 --timeout 240 --relative-tolerance 1e-06 --interface-type CoSimulation --output-interval 0.0004 ../Buildings_latest_Buildings_Utilities_IO_Python_3_12_Functions_Examples_ExchangeWithPassPythonObject_fmpy-fmi3-cs-cvode.fmu)
LOG_ASSERT        | debug   | Failed to load "testFunctions".
|                 | |       | This may occur if you did not set the PYTHONPATH environment variable
|                 | |       | or if the Python module contains a syntax error.
|                 | |       | The error message is "(null)"
Fatal Python error: _PyThreadState_Attach: non-NULL old thread state
Python runtime state: initialized
TypeError: expected bytes, str found

Current thread 0x00007eb7442ba7c0 [python3] (most recent call first):
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi1.py", line 361 in _call
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi3.py", line 258 in fmi3ExitInitializationMode
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/fmi3.py", line 1339 in exitInitializationMode
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/simulation.py", line 1254 in simulateCS
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/simulation.py", line 801 in simulate_fmu
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/cli.py", line 186 in main
  File "/opt/libtest-venv/lib/python3.14/site-packages/fmpy/__main__.py", line 4 in <module>
  File "<frozen runpy>", line 88 in _run_code
  File "<frozen runpy>", line 198 in _run_module_as_main

Extension modules: numpy._core._multiarray_umath, numpy.linalg._umath_linalg, lxml._elementpath, lxml.etree (total: 4)