Cannot perform this action on a sealed instance

Cgraham 2018-05-01 20:35:03 UTC #1

Appium Python 2.7.10 Android 8.0.0

Get the following error when looking for an element. Occurs ~75% of the time…

Traceback (most recent call last): WebDriverWait(self.driver2,3000).until(EC.invisibility_of_element_located((By.ID, “com.exa.mobiletransfer:id/ellipsisImageView”))) File “/Library/Python/2.7/site-packages/selenium/webdriver/support/wait.py”, line 71, in until value = method(self._driver) File “/Library/Python/2.7/site-packages/selenium/webdriver/support/expected_conditions.py”, line 266, in call return _element_if_visible(_find_element(driver, self.locator), False) File “/Library/Python/2.7/site-packages/selenium/webdriver/support/expected_conditions.py”, line 402, in _find_element raise e WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: java.lang.IllegalStateException: Cannot perform this action on a sealed instance. at android.view.accessibility.AccessibilityNodeInfo.enforceNotSealed(AccessibilityNodeInfo.java:2992) at android.view.accessibility.AccessibilityNodeInfo.setConnectionId(AccessibilityNodeInfo.java:2875) at android.view.accessibility.AccessibilityInteractionClient.finalizeAndCacheAccessibilityNodeInfo(AccessibilityInteractionClient.java:817) at android.view.accessibility.AccessibilityInteractionClient.finalizeAndCacheAccessibilityNodeInfos(AccessibilityInteractionClient.java:835) at android.view.accessibility.AccessibilityInteractionClient.findAccessibilityNodeInfoByAccessibilityId(AccessibilityInteractionClient.java:308) at android.view.accessibility.AccessibilityInteractionClient.getRootInActiveWindow(AccessibilityInteractionClient.java:165) at android.app.UiAutomation.getRootInActiveWindow(UiAutomation.java:479) at io.appium.uiautomator2.model.internal.CustomUiDevice.getWindowRoots(CustomUiDevice.java:211) at io.appium.uiautomator2.model.internal.CustomUiDevice.findObject(CustomUiDevice.java:87) at io.appium.uiautomator2.handler.FindElement.findElement(FindElement.java:148) at io.appium.uiautomator2.handler.FindElement.safeHandle(FindElement.java:102) at io.appium.uiautomator2.handler.request.SafeRequestHandler.handle(SafeRequestHandler.java:56) at io.appium.uiautomator2.server.AppiumServlet.handleRequest(AppiumServlet.java:239) at io.appium.uiautomator2.server.AppiumServlet.handleHttpRequest(AppiumServlet.java:230) at io.appium.uiautomator2.http.ServerHandler.channelRead(ServerHandler.java:44) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345) at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:435) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267) at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:250) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:611) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:552) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:466) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:438) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140) at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144) at java.lang.Thread.run(Thread.java:764)

Any idea what is going on??

thanks

Cgraham 2018-05-02 15:48:53 UTC #2

Anyone have a solution for this crash?

mayu 2018-05-02 16:14:58 UTC #3

Hi Chris,

I am using Python. My code also uses EC.invisibility_of_element_located and I have never seen the same intermittent error. 3000 seems too short and potentially it could flake. Hopefully someone else can give you more info also. What’s happening is during the 3sec, it is looking continuously for all over the UI for the element to make sure it is invisible. I do not know how large your screen is. Good luck.