when running the example, there are some issues

[supertitan]

implementation of WebViewPlatform has been set to WebViewPlatform.instance before use. For unit
testing, WebViewPlatform.instance can be set with your own test implementation.
'package:webview_flutter_platform_interface/src/platform_webview_controller.dart':
Failed assertion: line 26 pos 7: 'WebViewPlatform.instance != null'

[CYBYOB]

+1，我在鸿蒙上也遇到类似的问题（其他库倒没问题），详见：https://developer.huawei.com/consumer/cn/forum/topic/0203190119332445068?fid=0101587865002800104