为什么Qt Creator Ubuntu发布屏幕为空？

我正在尝试将应用程序发布到Ubuntu商店，但是Qt Creator（或其他问题）出了点问题。

我曾经能够看到以下内容：

但是现在我所看到的是：

如您所见（或阅读，如果您使用的是没有图像的阅读器），此处的第二个图像未显示“常规”选项卡之类的内容，该选项卡允许我输入详细信息，例如维护者，名称，描述，安全策略组-它没有“清单”选项卡“ AppArmor”选项卡或“排除”选项卡。创建软件包按钮消失了。

All I am left with is a blank screen with only 1 enabled button which reads 'Validate existing Click package', but when I click that (since there's nothing else I can do, it seems...), it takes me to my Projects directory where all my apps are listed. I select the app in question, and I can't click the open button on the dialog because there is no *.click file anywhere to be seen.

Have I done something wrong? Do you know what's going on here?

Also, I read that in order to publish to the store, we need to create "Click apps". I've searched the universe for this phrase and have come up empty handed. How do I create a "Click app"? I thought the app I was creating was a click app (I went to Qt Creator > Qt Quick Application > ...).

Links:

Tutorial for Publishing apps: http://developer.ubuntu.com/publish/apps/packaging-click-apps/