I have downloaded stockfish and places the files within my google drive so it can be accessed within colab however it does not allow me to execute the files and I get a permission denied error. Does anyone know how to fix this?

```
def stockfish(board, depth):
    with chess.engine.SimpleEngine.popen_uci('/content/drive/MyDrive/stockfish-3.13.0/stockfish') as sf:
        result = sf.analyse(board, chess.engine.Limit(depth=depth))
        score = result['score'].white().score()
    return score

```

```
PermissionError: [Errno 13] Permission denied: '/content/drive/MyDrive/stockfish-3.13.0/stockfish'

```