HarmonyOS WebView无法加载h5页面中的图片

示例如下

@Entry
@Component
struct WebComponent {
  controller: webview.WebviewController = new webview.WebviewController();
  @State mode: MixedMode = MixedMode.All;
  build() {
    Column() {
      Button('loadUrl')
        .onClick(() => {

        })
      Web({
        src:
        "https://xxx",
        controller: this.controller
      })
        .domStorageAccess(true)
        .fileAccess(true)
        .imageAccess(true)
        .javaScriptAccess(true)
        .mixedMode(this.mode)
        .onlineImageAccess(true)
        .allowWindowOpenMethod(true)
    }
  }
}