release 3.2.6 breaks trame-vtk local rendering

[bourdaisj]

it seems that this line make trame-vtk app with local rendering crash:

trame-server/trame_server/core.py

Line 519 in b6e6b39

raise ValueError(error)

[bourdaisj]

stacktrace:

Traceback (most recent call last):
  File "./trame-app/app.py", line 120, in <module>
    html_view = vtk_widgets.VtkLocalView(
                ^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".venv/lib/python3.11/site-packages/trame_vtk/widgets/vtk/common.py", line 911, in __init__
    self.update()
  File "/.venv/lib/python3.11/site-packages/trame_vtk/widgets/vtk/common.py", line 937, in update
    full_state = self._helper.scene(
                 ^^^^^^^^^^^^^^^^^^^
  File "/.venv/lib/python3.11/site-packages/trame_vtk/modules/vtk/__init__.py", line 78, in scene
    scene_state = self._trame_server.protocol_call(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.venv/lib/python3.11/site-packages/trame_server/core.py", line 519, in protocol_call
    raise ValueError(error)
ValueError: Protocol does not exist yet

[jourdain]

Should we update trame-vtk to do a try/except ValueError instead?

[jourdain]

It might be good to know if the call was successful or not?

[bourdaisj]

I agree try/except is generally better. No strong opinion on this though. Should try except and simply write a log entry if a value error raises?

[jourdain]

trame-vtk>=2.8.14 should be fine now

[user27182]

trame-vtk>=2.8.14 should be fine now

This resolved a similar issue for us in pyvista/pyvista#7067, thanks!