fix bug: msg.c_str

lyblsgo

2023-04-11 dc8a0445d5460af16e9926a492a85da592f224bb

 setup.py

@@ -13,7 +13,7 @@
    "install": [
        "setuptools>=38.5.1",
        # "configargparse>=1.2.1",
        "typeguard>=2.7.0",
        "typeguard<=2.13.3",
        "humanfriendly",
        "scipy>=1.4.1",
        # "filelock",