run_openfast python function error

[NLGenin21]

Hi everyone!

I'm new to ROSCO/OpenFAST and currently familiarizing myself with the software.
My way of studying it is by following the Examples from ROSCO repo and tuning to my folder and set-up.

I'm currently working on the file 05_openfast_sim.py. On this file I'm encountering the following error when I call the run_openfast function.
CalledProcessError: Command '['openfast', 'IEA-15-240-RWT-UMaineSemi.fst']' returned non-zero exit status 1.

My function is set-up in this way:
run_openfast( os.path.join(tune_dir,path_params['FAST_directory']), fastcall=fastcall, fastfile=path_params['FAST_InputFile'], chdir=True )

I've troubleshoot the step by step of the code for all parameters and it is everything working weel and no error appears.
Only appears the error when running the run_openfast function.

Has someone gone through this and could help me?