[]IDE内置调试工具无法启动

launch.json内容如下（新建项目自带的，从来没动过）
{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "layaAir",
            "type": "chrome",
            "request": "launch",
            "file": "${workspaceRoot}/bin/index.html",
            "runtimeExecutable": "${execPath}",
            "useBuildInServer": true,
            "sourceMaps": true,
            "webRoot": "${workspaceRoot}",
            "port": 9222,
            "fixedPort":false
        },
        {
            "name": "chrome调试",
            "type": "chrome",
            "request": "launch",
            "file": "${workspaceRoot}/bin/index.html",
            // "换成自己的谷歌安装路径，": 比如
            //window 默认安装路径为: "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe"
            //mac 系统上的默认安装路径为 "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome";
            // "runtimeExecutable": "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe",
            "runtimeArgs": [
                "--allow-file-access-from-files",
                "--allow-file-access-frome-files",
                " --disable-web-security"
            ],
            "sourceMaps": true,
            "webRoot": "${workspaceRoot}",
            //假如谷歌调试报userDataDir不可用，请把谷歌安装路径取得管理员权限,或者更换${tmpdir}为其他可以读写的文件夹，也可以删除。
            "userDataDir": "${workspaceRoot}/.laya/chrome",
            "fixedPort":false
        }
    ]
}