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Object reference not set to an instance of an object
See original GitHub issuePuppeteerSharp.NavigationException: Navigation failed because browser has disconnected! (Connection failed to process Runtime.executionContextCreated. Object reference not set to an instance of an object..
at PuppeteerSharp.DOMWorld.SetContext(ExecutionContext context) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\DOMWorld.cs:line 37
at PuppeteerSharp.FrameManager.OnExecutionContextCreatedAsync(ContextPayload contextPayload) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 291
at PuppeteerSharp.FrameManager.Client_MessageReceived(Object sender, MessageEventArgs e) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 218)
---> PuppeteerSharp.TargetClosedException: Navigation failed because browser has disconnected! (Connection failed to process Runtime.executionContextCreated. Object reference not set to an instance of an object..
at PuppeteerSharp.DOMWorld.SetContext(ExecutionContext context) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\DOMWorld.cs:line 37
at PuppeteerSharp.FrameManager.OnExecutionContextCreatedAsync(ContextPayload contextPayload) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 291
at PuppeteerSharp.FrameManager.Client_MessageReceived(Object sender, MessageEventArgs e) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 218)
at PuppeteerSharp.Helpers.TaskHelper.WithTimeout(Task task, Func`1 timeoutAction, TimeSpan timeout, CancellationToken cancellationToken) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\Helpers\TaskHelper.cs:line 82
at PuppeteerSharp.FrameManager.NavigateFrameAsync(Frame frame, String url, NavigationOptions options) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 130
--- End of inner exception stack trace ---
PuppeteerSharp.NavigationException: Protocol error (Page.navigate): Session closed. Most likely the Page has been closed.Close reason: Connection failed to process Runtime.executionContextCreated. Object reference not set to an instance of an object..
at PuppeteerSharp.DOMWorld.SetContext(ExecutionContext context) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\DOMWorld.cs:line 37
at PuppeteerSharp.FrameManager.OnExecutionContextCreatedAsync(ContextPayload contextPayload) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 291
at PuppeteerSharp.FrameManager.Client_MessageReceived(Object sender, MessageEventArgs e) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 218
---> PuppeteerSharp.PuppeteerException: Protocol error (Page.navigate): Session closed. Most likely the Page has been closed.Close reason: Connection failed to process Runtime.executionContextCreated. Object reference not set to an instance of an object..
at PuppeteerSharp.DOMWorld.SetContext(ExecutionContext context) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\DOMWorld.cs:line 37
at PuppeteerSharp.FrameManager.OnExecutionContextCreatedAsync(ContextPayload contextPayload) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 291
at PuppeteerSharp.FrameManager.Client_MessageReceived(Object sender, MessageEventArgs e) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 218
at PuppeteerSharp.CDPSession.SendAsync(String method, Object args, Boolean waitForCallback) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\CDPSession.cs:line 157
at PuppeteerSharp.CDPSession.SendAsync[T](String method, Object args) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\CDPSession.cs:line 109
at PuppeteerSharp.FrameManager.NavigateAsync(CDPSession client, String url, String referrer, String frameId) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 147
at PuppeteerSharp.FrameManager.NavigateFrameAsync(Frame frame, String url, NavigationOptions options) in C:\projects\puppeteer-sharp\lib\PuppeteerSharp\FrameManager.cs:line 130
--- End of inner exception stack trace ---
See upstream issue https://github.com/puppeteer/puppeteer/issues/4197
Issue Analytics
- State:
- Created 2 years ago
- Comments:15 (15 by maintainers)
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@kblok Must-read: https://stackoverflow.com/questions/29146200/why-is-or-isnt-setting-fields-in-a-constructor-thread-safe
Closed due to inactivity. Feel free to reopen it if needed.