Butterfly error PythonException

Hi Ladybug community, I am new to ladybug and just installed butterfly. When I try to run the example file as a test, an error occurred.

        {0;0}
  1. Updating cell size in blockMeshDict.
  2. Updating grading in blockMeshDict.
  3. Saved changes to blockMeshDict to:
    C:\Users\50532\butterfly\outdoor_airflow\system\blockMeshDict
  4. Runtime error (PythonException): ‘“C:\Program Files\blueCFD-Core-2020\setvars.bat”’ ²»ÊÇÄÚ²¿»òÍⲿÃüÁҲ²»ÊÇ¿ÉÔËÐеijÌÐò
    »òÅú´¦ÀíÎļþ¡£
    ‘blockMesh’ ²»ÊÇÄÚ²¿»òÍⲿÃüÁҲ²»ÊÇ¿ÉÔËÐеijÌÐò
    »òÅú´¦ÀíÎļþ¡£

Traceback:
line 278, in _handle_process, “C:\Users\50532\AppData\Roaming\McNeel\Rhinoceros\7.0\scripts\butterfly\runmanager_bluecfd.py”
line 213, in _run_ironpython, “C:\Users\50532\AppData\Roaming\McNeel\Rhinoceros\7.0\scripts\butterfly\runmanager_bluecfd.py”
line 234, in run, “C:\Users\50532\AppData\Roaming\McNeel\Rhinoceros\7.0\scripts\butterfly\runmanager_bluecfd.py”
line 756, in command, “C:\Users\50532\AppData\Roaming\McNeel\Rhinoceros\7.0\scripts\butterfly\case.py”
line 788, in blockMesh, “C:\Users\50532\AppData\Roaming\McNeel\Rhinoceros\7.0\scripts\butterfly\case.py”
line 52, in script

How can I fix it? I don’t know coding at all.
Thanks in advance

Butterfly is not compatible with blueCFD 2020-1, so use blueCFD 2017-2.

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