I am working with KNIME 5.2.5, and every so often, without any apparent trigger, the platform screen goes white, and only the banner at the top with the name remains visible. It does not allow saving, closing, and never recovers. I have to close KNIME from the Task Manager, which means I lose the work I’ve been doing. I cannot use KNIME 5.3 because, in the workflow I’m working on, I’m using some Vernalis nodes for which there is no extension in that version. Is there any solution for this? In one week, I’ve lost several hours of work due to this issue. OS: Windows 11 Sceenshot: [image] Thank you

Hey, just to make sure: were you working in the modern or the in the classic UI? Best, Ben

Heyhey, there might be some information logged that might help us diagnose the problem. Check for .dmp files in the following directory Linux: ~/.config/cef_user_data/pending Windows: ~\AppData\Local\CEF\User Data\Crashpad\reports macOS: ~/Library/Application Support/CEF/User Data/pending If any are present, it would be helpful if you could post them here. Best, Ben

@armingrudd It just happened again. Log. file: 2024-09-01 17:43:21,450 : WARN : main : : WizardNodeView : : : Unable to retrieve value from view 2024-09-01 21:04:29,832 : ERROR : Provisioning Event Dispatcher : : PythonGatewayTracker : : : Found running Python processes. Aborting them to allow installation process. If this leads to failures in node execution, please restart those nodes once the installation has finished It gives me a 502 error when i try to upload the screenshot picture to this post. I it the same as above, posts though.

I am running version 5.2.5. Same blank screen. The only way to recover the GUI is to restart Knime. when I attemt to close window to restart it asked to save files. Clicking yes the window goes away and nothing happens. click no and it closes the window and allows KNIME to be restarted.

Thank you @rwalker , @JeanDavid and @lsandinop for reporting, Does this issue happen when you have flow variables with very long values?

Dear @rwalker , Regarding the log entries provided, you shared two and the second one was recorded at 21:04:29 which points to installing an extension and closing Python processes to install and restart AP. Did the issue happen around the same time? Like during installation or right after installing and restarting AP? If not, would you let us know if the potential cause in my previous reply is valid or not please? Thank you!

Hey, just wanted to give a quick update that we are currently actively working on diagnosing and fixing this issue (NXT-2898). Best, Ben

Same screen happening here. Version 5.3.2. Can’t save the opened workflows even though they aren’t executing. [image]

Any news on this issue? Still facing the same problem frequently here.

Hey @HenriqueVandam , We believe we have mitigated the cause(s) of this issue. In additional, we have introduced a “health checker” that, should be interface still become unresponsive, will give you an option to save your projects and restart the UI. Can you upgrade to the latest version and let us know whether you still have these issues? Best, Ben

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The interface freezes, turns white, and doesn't allow any actions

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