断开错误org.openqa.selenium.WebDriverException的连接已断开：使用Selenium ChromeDriver和Chrome收到Inspector.detached事件

Question

I am trying to run my automation script using selenium and Java and facing an error as:

WebDriverException: Message: disconnected: received Inspector.detached event
    (Session info: chrome=76.0.3809.100)         
    (Driver info: chromedriver=76.0.3809.126 (d80a294506b4c9d18015e755cee48f953ddc3f2f-refs/branch-heads/3809@{#1024})

Can someone explain me the error please?

Answer 1

This error message...

WebDriverException: Message: disconnected: received Inspector.detached event

...implies that the ChromeDriver was automatically disconnected when the test execution was In Progress .

In the article DevTools window keeps closing it is clearly mentioned that if you try to open the DevTools window when the ChromeDriver is busy executing automated tests , the ChromeDriver automatically gets disconnected and when ChromeDriver receives a command in disconnected state, it will attempt to close the DevTools window and reconnect back. Earlier Chrome's DevTools allowed only one debugger per page. But since ChromeDriver v2.x, it is now a DevTools debugging client.

If your usecase is to inspect the DOM Tree through the DevTools, the best approach would be to pause your test execution so that ChromeDriver won't close the DevTools. When you complete inspecting HTML DOM through Chrome, you can unpause your test and ChromeDriver will close the window and continue.

As per the discussion in unknown error: cannot determine loading status from disconnected: received Inspector.detached placing the ChromeDriver in path solves the issue. So you need to:

driver = webdriver.Chrome(executable_path='/path/to/chromedriver')
driver.get("https://google.com")