混合app contexts切换上下文时报错

前提条件：android 华为荣耀手机         测试app：混合应用（webview：腾讯x5内核）

selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: Failed to start Chromedriver session: An unknown server-side error occurred while processing the command. Original error: unknown error: unable to discover open pages

contexts = self.driver.contexts
print('context=', contexts)

context= ['NATIVE_APP', 'WEBVIEW_com.XXXX.XXXX', 'WEBVIEW_com.XXXX.XXXX:xg_service_v4', 'WEBVIEW_com.tencent.mm']

self.driver.switch_to.context('WEBVIEW_com.XXXX.XXXX')

切换一直无法发现打开的页，求解决方案