在基于 x5 开发的混合应用中，appium 切换 webview 报错。
启动配置如下：

实现代码：

报错日志

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/appium/webdriver/switch_to.py:30: in context
self._driver.execute(MobileCommand.SWITCH_TO_CONTEXT, {'name': context_name})
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py:321: in execute
self.error_handler.check_response(response)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/appium/webdriver/errorhandler.py:29: in check_response
raise wde
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/appium/webdriver/errorhandler.py:24: in check_response
super(MobileErrorHandler, self).check_response(response)

self =
response = {'status': 500, 'value': '{"value":{"error":"unknown error","message":"An unknown server-side error occurred while pro...um.app/Contents/Resources/app/node_modules/appium/node_modules/appium-base-driver/lib/protocol/protocol.js:388:37)"}}'}

def check_response(self, response):
"""
Checks that a JSON response from the WebDriver does not have an error.

:Args:
- response - The JSON response from the WebDriver server as a dictionary
object.

:Raises: If the response contains an error message.
"""
status = response.get('status', None)
if status is None or status == ErrorCode.SUCCESS:
return
value = None
message = response.get("message", "")
screen = response.get("screen", "")
stacktrace = None
if isinstance(status, int):
value_json = response.get('value', None)
if value_json and isinstance(value_json, basestring):
import json
try:
value = json.loads(value_json)
if len(value.keys()) == 1:
value = value['value']
status = value.get('error', None)
if status is None:
status = value["status"]
message = value["value"]
if not isinstance(message, basestring):
value = message
message = message.get('message')
else:
message = value.get('message', None)
except ValueError:
pass

exception_class = ErrorInResponseException
if status in ErrorCode.NO_SUCH_ELEMENT:
exception_class = NoSuchElementException
elif status in ErrorCode.NO_SUCH_FRAME:
exception_class = NoSuchFrameException
elif status in ErrorCode.NO_SUCH_WINDOW:
exception_class = NoSuchWindowException
elif status in ErrorCode.STALE_ELEMENT_REFERENCE:
exception_class = StaleElementReferenceException
elif status in ErrorCode.ELEMENT_NOT_VISIBLE:
exception_class = ElementNotVisibleException
elif status in ErrorCode.INVALID_ELEMENT_STATE:
exception_class = InvalidElementStateException
elif status in ErrorCode.INVALID_SELECTOR \
or status in ErrorCode.INVALID_XPATH_SELECTOR \
or status in ErrorCode.INVALID_XPATH_SELECTOR_RETURN_TYPER:
exception_class = InvalidSelectorException
elif status in ErrorCode.ELEMENT_IS_NOT_SELECTABLE:
exception_class = ElementNotSelectableException
elif status in ErrorCode.ELEMENT_NOT_INTERACTABLE:
exception_class = ElementNotInteractableException
elif status in ErrorCode.INVALID_COOKIE_DOMAIN:
exception_class = InvalidCookieDomainException
elif status in ErrorCode.UNABLE_TO_SET_COOKIE:
exception_class = UnableToSetCookieException
elif status in ErrorCode.TIMEOUT:
exception_class = TimeoutException
elif status in ErrorCode.SCRIPT_TIMEOUT:
exception_class = TimeoutException
elif status in ErrorCode.UNKNOWN_ERROR:
exception_class = WebDriverException
elif status in ErrorCode.UNEXPECTED_ALERT_OPEN:
exception_class = UnexpectedAlertPresentException
elif status in ErrorCode.NO_ALERT_OPEN:
exception_class = NoAlertPresentException
elif status in ErrorCode.IME_NOT_AVAILABLE:
exception_class = ImeNotAvailableException
elif status in ErrorCode.IME_ENGINE_ACTIVATION_FAILED:
exception_class = ImeActivationFailedException
elif status in ErrorCode.MOVE_TARGET_OUT_OF_BOUNDS:
exception_class = MoveTargetOutOfBoundsException
elif status in ErrorCode.JAVASCRIPT_ERROR:
exception_class = JavascriptException
elif status in ErrorCode.SESSION_NOT_CREATED:
exception_class = SessionNotCreatedException
elif status in ErrorCode.INVALID_ARGUMENT:
exception_class = InvalidArgumentException
elif status in ErrorCode.NO_SUCH_COOKIE:
exception_class = NoSuchCookieException
elif status in ErrorCode.UNABLE_TO_CAPTURE_SCREEN:
exception_class = ScreenshotException
elif status in ErrorCode.ELEMENT_CLICK_INTERCEPTED:
exception_class = ElementClickInterceptedException
elif status in ErrorCode.INSECURE_CERTIFICATE:
exception_class = InsecureCertificateException
elif status in ErrorCode.INVALID_COORDINATES:
exception_class = InvalidCoordinatesException
elif status in ErrorCode.INVALID_SESSION_ID:
exception_class = InvalidSessionIdException
elif status in ErrorCode.UNKNOWN_METHOD:
exception_class = UnknownMethodException
else:
exception_class = WebDriverException
if value == '' or value is None:
value = response['value']
if isinstance(value, basestring):
if exception_class == ErrorInResponseException:
raise exception_class(response, value)
raise exception_class(value)
if message == "" and 'message' in value:
message = value['message']

screen = None
if 'screen' in value:
screen = value['screen']

stacktrace = None
if 'stackTrace' in value and value['stackTrace']:
stacktrace = []
try:
for frame in value['stackTrace']:
line = self._value_or_default(frame, 'lineNumber', '')
file = self._value_or_default(frame, 'fileName', '')
if line:
file = "%s:%s" % (file, line)
meth = self._value_or_default(frame, 'methodName', '')
if 'className' in frame:
meth = "%s.%s" % (frame['className'], meth)
msg = " at %s (%s)"
msg = msg % (meth, file)
stacktrace.append(msg)
except TypeError:
pass
if exception_class == ErrorInResponseException:
raise exception_class(response, message)
elif exception_class == UnexpectedAlertPresentException:
alert_text = None
if 'data' in value:
alert_text = value['data'].get('text')
elif 'alert' in value:
alert_text = value['alert'].get('text')
raise exception_class(message, screen, stacktrace, alert_text)

raise exception_class(message, screen, stacktrace)
E selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: An unknown server-side error occurred while processing the command. Original error: unknown error: Failed to get sockets matching: @weblayer_devtools_remote_.*17062
E (make sure the app has its WebView/WebLayer configured for debugging)

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py:242: WebDriverException

Assertion failed

Assertion failed

Assertion failed