Qlik Sense April 2019 Patch 1 engine crashes when reloading app

[robert_bond]

I'd like help in diagnosing a problem with Qlik Sense Enterprise April 2019 Patch 1. 

When I refresh this app (see photo below), the engine crashes as the app is saving. I didn't see this behavior in prior versions of Qlik Sense. 

How do I fix/diagnose this issue?

[johanmoisanderm]

To bump:

I appear to have the same issue, occasionally, when using february'19. Sometimes it works with no issue but other times  it fails and the engine crashes. Always through the hub though, I have gotten into the habit of creating manual tasks to reload in the QMC instead, where no issues are found.

Is there anyone who have encountered/solved the issue?

[robert_bond]

Check for 3rd party extensions in your app. That was the issue in our app. The solution for us: remove all 3rd party extensions. 

[duzunic88]

@robert_bond do you mind sharing which extension it was? I'm worried that it might be being caused by a vizlib extension but we have a lot of those and don't want to remove all.

[robert_bond]

I don't recall. That was one employer and many months ago. I'm guessing it was report builder.