Request BrowserId : 1 not found it's likely the browser is already closed

[sxsean1]

private async void _browser_LoadingStateChanged2(object sender, LoadingStateChangedEventArgs e)
{
if (!e.IsLoading)
{
JavascriptResponse resp = await _browser.GetMainFrame().EvaluateScriptAsync(
@"document.getElementsByClassName('xt0psk2')[0]['href'];"
);
}
}
110版本可以 新版本提示
:EvaluateScriptAsyncChromiumWebBrowserRequest BrowserId : 1 not found it's likely the browser is already closedloadingStateChanged

[amaitland]

English please.

Please provide more information, answer questions at https://github.com/cefsharp/CefSharp/wiki/Questions-&-Support#when-asking-a-question-please-include-the-following

[sxsean1]

private async void _browser_LoadingStateChanged2(object sender, LoadingStateChangedEventArgs e)
{
if (!e.IsLoading)
{
JavascriptResponse resp = await _browser.GetMainFrame().EvaluateScriptAsync(
@"document.getElementsByClassName('xt0psk2')[0]['href'];"
);
}
}
I sometimes encounter this mistake for no reason. (EvaluateScriptAsyncChromiumWebBrowserRequest BrowserId: 1 not found it's like the browser is already closed)

I think this is an error in Cefs browser (115- until the latest version -117.2.40). After multiple page jumps, sometimes it becomes invalid
I found that analogs of this code can work properly
Browser ExecuteScriptAsync (script);

https://ru.stackoverflow.com/questions/1534819/request-browserid-1-not-found-its-likely-the-browser-is-already-closed

[amaitland]

Your welcome to review the most recent changes see v115.3.130...v117.2.40

More likely there's been a behaviour change in Chromium.

[ficho-hun]

That happened me too with the new versions.
After the page reloaded because of navigation or redirection, every script execution failed.
I tried the Browser.ExecuteAsync(script) as a workaround, but since that using the same functions that produce the same error.

[amaitland]

An issue has been created #4621

Moving the discussion there.

[amaitland]

If someone can provide a failing unit tests that reproduces the problem then see #4621 (comment)