"Denied Method call "listApps" for category "/"

We are trying to get the installed app List for the webos 4.x - 7.x, Getting the permission issue for the following methods

Note- We have set the Devmode ON using luna://com.webos.service.devmode/setDevMode method

  1. luna://com.webos.service.applicationmanager/listApps
  2. luna://com.webos.service.applicationmanager/dev/listApps
  3. luna://com.webos.applicationManager/dev/managerInfo
  4. luna://com.webos.service.applicationmanager/listLaunchPoints

Added requiredPermissions in appinfo.json

"requiredPermissions": [
    "application.launcher",
    "application.manager",
	  "time.query",
    "activity.operation",
    "database",
    "database.internal",
    "database.operation",
    "application.operation",
    {
      "service": "luna://com.webos.service.applicationmanager",
      "methods": [
        "listLaunchPoints", "listApps", "getAppInfo"
      ]
    }
  ],
  "acg": {
    "permissions": [
      {
        "service": "luna://com.webos.service.applicationmanager",
        "methods": ["listLaunchPoints", "getAppInfo", "listApps"]
      }
    ]
  }

Issue: "Denied Method call "{MethodName} for category “/” or “/dev”
We have followed this document: com.webos.service.applicationmanager | webOS Open Source Edition

Please suggest us, which permission we are missing for this method call

Thanks

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