Xcode does not support previews in a macOS Widget extension

Sorry to bother, but I guess there might be something wrong. I added a Widget Extension in Xcode 14.2 to my macOS applicaiton the way the official document told me to. However, I found it in surprise that the function of previews is not supported? Quite confusing. Is there something wrong with this implementation?

Diagnotics:

UnsupportedMacAppExtensionTypeError: Widget extensions are not supported

Xcode does not support previews in a macOS Widget extension

extension: AppExtension(bundleIdentifier: "com.louisstudio.WidgetHub.ProjectWidget", displayName: "ProjectWidgetExtension", kind: PreviewsPlatforms.AppExtension.Kind.homeScreen, signingInformation: Optional(Code Signing {
  identifier: com.louisstudio.WidgetHub.ProjectWidget
  identity: 04FFDADBA91F279D4A0CC823B283DC1115BF09DB
  hasGetTaskAllow: false
  isSandboxed: true
}))

I haven't modified anything yet. Everything is exactly what the template of a Widget Extension is like.

macOS Version: 12.6.2 (21G320)
Xcode Version: 14.2

Hoping to get help. Thanks.