JsonException while opening an url on remote web driver

[srilakshmishankar]

I get below error randomly while trying to open a page on remote webdriver. This was rare before and since a couple of days it has become very frequent and I am out of ideas to fix this. Not all tests that have page.open() fail, only few especially when I try to open new tab and open a page and sometimes just page.open() as well. Any suggestion or tweaks will be really helpful. Tests were stable and now suddenly this is making unstable. In the report screenshot shows that I am on correct page after open but this error appears.

The tests run on grid. Locally I cannot reproduce this issue.

org.openqa.selenium.json.JsonException: Unable to determine type from: <. Last 1 characters read: < Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03' System info: host: 'runner-dfgiwod7-project-230-concurrent-0', ip: '172.17.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '4.15.0-1029-aws', java.version: '11.0.10' Driver info: driver.version: RemoteWebDriver at org.openqa.selenium.json.JsonInput.peek(JsonInput.java:122) at org.openqa.selenium.json.JsonTypeCoercer.lambda$null$6(JsonTypeCoercer.java:140) at org.openqa.selenium.json.JsonTypeCoercer.coerce(JsonTypeCoercer.java:126) at org.openqa.selenium.json.Json.toType(Json.java:69) at org.openqa.selenium.json.Json.toType(Json.java:55) at org.openqa.selenium.json.Json.toType(Json.java:50) at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:87) at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49) at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158) at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552) at org.openqa.selenium.remote.RemoteWebDriver.get(RemoteWebDriver.java:277) at net.thucydides.core.webdriver.WebDriverFacade.get(WebDriverFacade.java:172) at net.serenitybdd.core.pages.PageObject.openPageAtUrl(PageObject.java:914) at net.serenitybdd.core.pages.PageObject.open(PageObject.java:815) at net.serenitybdd.core.pages.PageObject.open(PageObject.java:803)

[wakaleo]

That looks like some kind of driver issue.

[srilakshmishankar]

That looks like some kind of driver issue.

I see this in logs related to this error
Caused by: net.thucydides.core.webdriver.DriverConfigurationError: Could not instantiate new WebDriver instance of type class org.openqa.selenium.remote.RemoteWebDriver (The appium.platformName needs to be specified (either IOS or ANDROID)). See below for more details. at net.thucydides.core.webdriver.WebDriverFactory.newWebdriverInstance(WebDriverFactory.java:159) at net.thucydides.core.webdriver.WebDriverFacade.newDriverInstance(WebDriverFacade.java:141) at net.thucydides.core.webdriver.WebDriverFacade.newProxyDriver(WebDriverFacade.java:132) at net.thucydides.core.webdriver.WebDriverFacade.getProxiedDriver(WebDriverFacade.java:102) at net.thucydides.core.pages.Pages.isHtmlUnitDriver(Pages.java:152) at net.thucydides.core.pages.Pages.openHtmlUnitDriverIfNotOpen(Pages.java:137) at net.thucydides.core.pages.Pages.openBrowserIfRequiredFor(Pages.java:130) at net.thucydides.core.pages.Pages.currentPageAt(Pages.java:118)

Not sure what but I am automating an web application and I don't use Appium here.
I am still facing this exception and has become more frequent recently. What else info can I provide on this?

[wakaleo]

What version are you using?

[srilakshmishankar]

Today I updated to 2.4.34

[srilakshmishankar]

Hi @wakaleo , do you know any info or can I provide any more details?

[wakaleo]

If it happens randomly and not on a local run that would point to a problem of stability on the remote service side.

[srilakshmishankar]

So all issues are happening when running on remote webdriver:

1. org.openqa.selenium.json.JsonException: Unable to determine type from: <. Last 1 characters read: < --> the most frequent issue and happens only with Page.open()

Below issues after recently I updated serenity versions
2. Caused by: net.thucydides.core.webdriver.DriverConfigurationError: Could not instantiate new WebDriver instance of type class org.openqa.selenium.remote.RemoteWebDriver (The appium.platformName needs to be specified (either IOS or ANDROID)).
3. WARN n.s.core.photography.PhotoSession - Failed to take screenshot com.assertthat.selenium_shutterbug.utils.web.UnableTakeSnapshotException: javax.imageio.IIOException: Error reading PNG image data

[wakaleo]

Possibly load issues with your selenium grid or remote server? I don't think it's related to your code.

[srilakshmishankar]

Hi @wakaleo,

So whenever I skip a test using a tag I get below error and it makes gradle test task fail even though the pipeline has passed. The test gets skipped but on gradle it says test failed. On serenity test report it is skipped, no problem there.

Any info on this?
How should I skip the test? I am not even running test on Firefox and and there is Firefox driver exception.

[srilakshmishankar]

Okay above happens when I have tags @Skip and @Skipprod.
@Skip I was using by default skip on environment and @Skipprod for just skipping on prod environment. In my gradle test command for prod I was passing 'not @Skipprod' and it was causing above exception in the screenshot. Now I changed it to 'not @Skip and not @Skipprod' so it works fine.

I think some how it was getting messed.