不支持浏览器通知

Question

嗨，我的网站有一个简单的Kotlin Webview应用程序 我的网站有推送通知，其适用于Windows的chrome和适用于Android的chrome 但在我的应用中说不支持 这是图片

Image Fome The App

    class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {

    @SuppressLint("SetJavaScriptEnabled", "SdCardPath")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setSupportActionBar(toolbar)

        webframe.loadUrl(getString(R.string.Site_Url))
        webframe.settings.javaScriptEnabled = true//Enable JavaScript
        webframe.settings.allowFileAccess = true
        webframe.settings.allowFileAccessFromFileURLs = true
        webframe.settings.allowContentAccess = true
        webframe.settings.domStorageEnabled = true
        webframe.settings.setGeolocationEnabled(true)
        CookieManager.getInstance().acceptCookie()
        webframe.restoreState(savedInstanceState)

    }
}