Encountered a WebDriverException when attempting to capture a screenshot

While attempting to capture a screenshot from my Firefox browser, I encountered the following exception:

org.openqa.selenium.WebDriverException: [Exception... "Data conversion failed because significant data would be lost"  nsresult: "0x80460003 (NS_ERROR_LOSS_OF_SIGNIFICANT_DATA)"  location: "JS frame :: resource://gre/modules/AsyncShutdown.jsm :: observe :: line 551"  data: no]
Build info: version: 'unknown', revision: 'unknown', time: 'unknown'
System info: host: 'fd9ab02a8254', ip: '172.17.0.2', os.name: 'Linux', os.arch: 'amd64', os.version: '3.10.0-862.el7.x86_64', java.version: '1.8.0_232'
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities {acceptInsecureCerts: true, browserName: firefox, browserVersion: 72.0.1, javascriptEnabled: true, moz:accessibilityChecks: false, moz:buildID: 20200107212822, moz:geckodriverVersion: 0.26.0, moz:headless: true, moz:processID: 577, moz:profile: /tmp/rust_mozprofile3kZelv, moz:shutdownTimeout: 60000, moz:useNonSpecCompliantPointerOrigin: false, moz:webdriverClick: true, pageLoadStrategy: normal, platform: LINUX, platformName: LINUX, platformVersion: 3.10.0-862.el7.x86_64, rotatable: false, setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify}
Session ID: 7e2460a8-267c-4e91-9774-ad3fb5e4e808
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
    at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
    at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
    at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:160)
    at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:601)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:658)
    at org.openqa.selenium.remote.RemoteWebDriver.getScreenshotAs(RemoteWebDriver.java:343)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    ....

The Java code line that triggers this exception is:

File srcFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);

This code functions properly on various machines, but upon installation on a new machine, it results in this error.

Any insights into what might be causing it? The application is being run from a container.

javascriptjavaselenium-webdriverselenium-firefoxdriver

Answer №1

After numerous attempts, I discovered a few key strategies that helped me resolve the issue:

  • Always check for the visibility of elements you are trying to capture in a screenshot. In one instance, I attempted to capture an image of a table only to realize there were invisible elements causing the program to crash.

    if (element.isDisplayed())

  • Break down the element and piece together like a puzzle: capture row by row and then merge them all together using 

BufferedImage bi = new BufferedImage(element.getSize().width, element.getSize().height, BufferedImage.TYPE_INT_RGB);

  • Ensure elements have loaded completely by waiting utilizing:

    WebDriverWait wait = new WebDriverWait(driver, 300);
    wait.until(ExpectedConditions.visibilityOfElementLocated(By.id("report_table")));
    wait.until(webDriver -> ((JavascriptExecutor) webDriver).executeScript("return document.readyState").equals("complete"));

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