I might have the same problem. But I figure out.
The official document right here mentioned you have to create GameFeatureDate under your plugin directory and the GameFeatureData needs to have the same name as your plugin. Unfortunately，I missed the last half sentence. And that’s why the red line hints data missing.
As for the installed state crash you mentioned, in fact, it’s not a crash. Installed state means the plugin is on disk not loaded, so it will not be displayed. Then the window closed. You can hover your mouse on these states to learn more.