HarmonyOS 鸿蒙Next web加载备案号地址展示为白屏

HarmonyOS 鸿蒙Next web加载备案号地址展示为白屏
我们项目中用到了web加载备案号地址，但展示时为白屏，想请问下是什么原因，代码如下：

@Entry
@Component
struct BrowerPage {
pageTitle: string = ""
url: string = ""
controller: web_webview.WebviewController = new web_webview.WebviewController();

aboutToAppear() {
YdLogger.debug(JSONUtil.beanToJsonStr(router.getParams()))

this.pageTitle = ""
this.url = "xxx"
}

build() {
Column() {
YdCustomNavigation({ mTitle: this.pageTitle })
Column(){
Web({ src: this.url, controller: this.controller})
.javaScriptAccess(true)
.fileAccess(true)
.domStorageAccess(true)
.geolocationAccess(true)
.imageAccess(true)
.cacheMode(CacheMode.None)
.backgroundColor($r('app.color.white'))
.height(CommonConstants.YD_FULL_WITH)
.width(CommonConstants.YD_FULL_HEIGHT)

}
.layoutWeight(1)
.width(CommonConstants.YD_FULL_HEIGHT)
}
}
}