Solara and PyVista thread error

[LeDanieI]

I also wrote this in the PyVista repo but thought I'd try my luck here instead.

Sample Code What is the problem, question, or error?

Write a short description telling me what you are doing, what you expect to happen, and what is currently happening.

# file: test.py
import pyvista as pv
import ipywidgets as wg
from pyvista import examples

pv.global_theme.trame.jupyter_extension_enabled = False

class Test():
    def __init__(self):
        self.output = wg.Output()
        self.button = wg.Button(description="Show")
        self.button.on_click(self.button_click)
        self.combined = wg.VBox([self.output, self.button])
        # pv.start_xvfb() # Run this only in Docker
        pv.set_jupyter_backend('server')
                
    def button_click(self, event):
        self.show()
        
    def show(self):
        with self.output:
            self.output.clear_output(wait=True) 
            mesh = examples.download_nefertiti()
            mesh.rotate_x(-90.0, inplace=True)
            p = pv.Plotter(notebook=True)
            p.add_mesh(mesh, color="linen", pbr=True, metallic=0.8, roughness=0.1, diffuse=1)
            p.show()
            
    def widget(self):
        return self.combined
        
test = Test()
page = test.widget()

Description

I’m new to both PyVista and Solara and am working on creating a Solara app that incorporates ipywidgets and a PyVista plot. Everything functions correctly when I run it locally on my Windows PC solara run test.py. When I click the Show button-widget, the PyVista plot renders in the output-widget.

However, I’m having trouble getting this to work in my Docker container (it does work as a solo widget within Jupyter Lab of the container though). I'm encountering an error (see below). Can anyone advise on how to resolve this issue? I provided a sample code.

System Information

ERROR:root:Exception raised by task = <Task finished name='Task-2' coro=<WebAppServer.start() done, defined at /opt/conda/lib/python3.10/site-packages/wslink/backends/aiohttp/__init__.py:117> exception=RuntimeError('set_wakeup_fd only works in main thread of the main interpreter')>
Traceback (most recent call last):
  File "/opt/conda/lib/python3.10/asyncio/unix_events.py", line 105, in add_signal_handler
    signal.set_wakeup_fd(self._csock.fileno())
ValueError: set_wakeup_fd only works in main thread of the main interpreter

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/conda/lib/python3.10/site-packages/trame_server/core.py", line 710, in on_done
    task.result()
  File "/opt/conda/lib/python3.10/asyncio/futures.py", line 201, in result
    raise self._exception.with_traceback(self._exception_tb)
  File "/opt/conda/lib/python3.10/asyncio/tasks.py", line 232, in __step
    result = coro.send(None)
  File "/opt/conda/lib/python3.10/site-packages/wslink/backends/aiohttp/__init__.py", line 123, in start
    await self._runner.setup()
  File "/opt/conda/lib/python3.10/site-packages/aiohttp/web_runner.py", line 281, in setup
    loop.add_signal_handler(signal.SIGINT, _raise_graceful_exit)
  File "/opt/conda/lib/python3.10/asyncio/unix_events.py", line 107, in add_signal_handler
    raise RuntimeError(str(exc))
RuntimeError: set_wakeup_fd only works in main thread of the main interpreter