Ubuntu Touch apparmor 在发出 Http Post/Get 请求时被拒绝吗？

Question

我正在尝试为 Ubuntu Touch 开发原生 QML 应用程序，但是当需要从我的服务器获取远程内容来填充列表视图时，它会因 apparmor 拒绝而失败。

这是我用来填充 UbuntuListView 的 ListModel。ListModel 有一个名为 fetchposts() 的函数，该函数迭代执行 XmlHttpRequest 以获取帖子的评论和标签列表。

ListModel {
    id: postsModel

    function fetchposts() {
        postsModel.clear() // empty our list view
        var http = new XMLHttpRequest();
        http.open("GET", server + "/postnum", true)
        http.send(null)
        var postnum = http.responseText
        /* repopulate list view */
        for (var i = 1; i <= postnum; i++) {
            http.open("GET", server + "/p/" + i + ".txt", true)
            http.send(null)
            var postComment = http.responseText
            http.open("GET", server + "/p/" + i + "_werc/tags", true)
            http.send(null)
            var postTags = http.responseText
            postsModel.append({"comment":postComment, "tags":postTags})
        }
   }
}

但是当我postsModel.fetchposts()稍后调用时，出现以下错误：

QNetworkManagerInterface::QNetworkManagerInterface(QObject*) propsReply "An AppArmor policy prevents this sender from sending this message to this recipient; type="method_call", sender=":1.1827" (uid=32011 pid=28754 comm="/usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene Toku") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination="org.freedesktop.NetworkManager" (uid=0 pid=1592 comm="NetworkManager ")"
QNetworkManagerInterface::QNetworkManagerInterface(QObject*) nmReply "An AppArmor policy prevents this sender from sending this message to this recipient; type="method_call", sender=":1.1827" (uid=32011 pid=28754 comm="/usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene Toku") interface="org.freedesktop.NetworkManager" member="GetDevices" error name="(unset)" requested_reply="0" destination="org.freedesktop.NetworkManager" (uid=0 pid=1592 comm="NetworkManager ")"
"Object path cannot be empty"

这是我的 apparmor 文件：

{
    "policy_groups": [
         "networking",
         "webview",
         "connectivity",
         "content_exchange",
         "content_exchange_source",
     ],
     "policy_version": 1.3
}

我发出的这些请求是否错误？如何发出 http 请求而不会遭到 apparmor 拒绝？

如果有人能给我指明正确的方向，我将不胜感激。