Execution fail for different graph models

[pradal]

Some default workflows (or graph models) fail to execute:
GrCM_MeM and MeM: start_matlab timed out at 10.017271 s
FakePlant:

canopy: layout = 1.400000, 1.300000, 1.700000
light: ambient light = 5.000000
INFO:ModelDriver.enqueue_output_loop[167]:GCCModelDriver(CanopyModel): End of model output
ERROR:ModelDriver.kill_process[273]:GCCModelDriver(CanopyModel): return code of -11 indicates model error.
INFO:runner.waitModels[388]:CisRunner(runner): GrowthModelPy still running
INFO:runner.waitModels[388]:CisRunner(runner): PhotosynthesisModel still running
ERROR:runner.waitModels[374]:CisRunner(runner): Error in model CanopyModel
ERROR:runner.waitModels[401]:CisRunner(runner): One or more models generated errors.
INFO:ModelDriver.enqueue_output_loop[167]:GCCModelDriver(LightModel): End of model output
ERROR: 82: comm_recv_realloc(canopy_structure_IN): Failed to receive header or message.
light: End of input.
ERROR: 82: free_comm(light_intensity_OUT): Error registered
INFO:ModelDriver.after_loop[207]:PythonModelDriver(GrowthModelPy): Queue thread still alive
ERROR:ModelDriver.kill_process[262]:PythonModelDriver(GrowthModelPy): Process is still running. Killing it.
INFO:ModelDriver.enqueue_output_loop[167]:PythonModelDriver(GrowthModelPy): End of model output
ERROR:ModelDriver.kill_process[273]:PythonModelDriver(GrowthModelPy): return code of -9 indicates model error.
INFO:ModelDriver.after_loop[207]:PythonModelDriver(PhotosynthesisModel): Queue thread still alive
ERROR:ModelDriver.kill_process[262]:PythonModelDriver(PhotosynthesisModel): Process is still running. Killing it.
INFO:ModelDriver.enqueue_output_loop[167]:PythonModelDriver(PhotosynthesisModel): End of model output
ERROR:ModelDriver.kill_process[273]:PythonModelDriver(PhotosynthesisModel): return code of -9 indicates model error.

[pradal]

The two first errors are already reported in this issue: cropsinsilico/yggdrasil#40