ValueError: A view or layout must be specified when attempting to.SaveScreenshot() from vtkRemoteView()`

[moon-chyldren]

I’ve successfully got the save screenshot function to work before with a trame-paraview app but the trame-paraview app I’m currently working on is giving me the following error when I click the button to download a screenshot.

ValueError: A view or layout must be specified
proceeded by the error JS Error => [object Object] mentioned in #543

My code for the trigger function looks exactly the way the working solution does that’s also mentioned in #543
I’m wondering if it has something to do with the way my app is laid out in my build_ui() function.
For instance, when I got this to work before I was using vtkRemoteLocalView() but this time I’m just using vtkRemoteView() like so

with VAppLayout(server, full_height=True) as layout:
       client.Style(‘html { overflow-y: hidden; }’)
       with pv_widgets.vtkRemoteView(self.render_window, interactive_quality=50) as remote_view:
               ctrl.view_update = remote_view.update()
               # …

Has anyone seen this ValueError before and happen to know what’s generating it? And are there other ways (or methods) for calling simple.SaveScreenshot() from somewhere other than simple? This line seems to be where the error is originating from as the console indicates it comes from …\paraview\simiple.py”, line 1468, in SaveScreenshot so I can look there in the meantime to see if I can figure out what’s causing it.
I can provide more details if needed.

[jourdain]

This should be asked on ParaView discourse, this is not related to trame.

When taking a screenshot, ParaView capture the layout of all its view. By skipping the layout setup in pure Python (aka trame), ParaView start to not be happy about that.

[moon-chyldren]

OK. What do you mean by “skipping the layout setup” exactly?
Isn’t this the layout setup I’ve done here?

with VAppLayout(server, full_height=True) as layout:
       client.Style(‘html { overflow-y: hidden; }’)
       with pv_widgets.vtkRemoteView(self.render_window, interactive_quality=50) as remote_view:
               ctrl.view_update = remote_view.update()
               # …

Or do I need to do something like this instead...

with VAppLayout(server, full_height=True) as layout:
       client.Style(‘html { overflow-y: hidden; }’)
       remote_view = pv_widgets.vtkRemoteView(self.render_window, interactive_quality=50)
       ctrl.view_update = remote_view.update()
       # …

..where I declare and define remote_view rather than using the with statement?

[jourdain]

ParaView layout, not trame... That is why I'm saying the issue is not trame related but ParaView related when driving it from Python.