Entangle window not showing after enabling the plugin

[ABelliqueux]

Hi,

When trying to enable the plugin with entangle 3.0, I'm getting the following messages in the terminal :

/home/foo/.config/entangle/plugins/stopmo_preview/stopmo_preview.py:10: PyGIWarning: Entangle was imported without specifying a version first. Use gi.require_version('Entangle', '0.1') before import to ensure that the right version gets loaded.
  from gi.repository import Entangle
Traceback (most recent call last):
  File "/home/foo/.config/entangle/plugins/stopmo_preview/stopmo_preview.py", line 291, in do_activate
    self.do_activate_window(win)
  File "/home/foo/.config/entangle/plugins/stopmo_preview/stopmo_preview.py", line 264, in do_activate_window
    pb.activate()
  File "/home/foo/.config/entangle/plugins/stopmo_preview/stopmo_preview.py", line 180, in activate
    builder = self.win.get_builder()
AttributeError: 'CameraManager' object has no attribute 'get_builder'. Did you mean: 'get_children'?

and subsequent launches of entangle result in no window appearing, and the following messages :

/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: cannot register existing type 'GtkWidget'
  g_type = info.get_g_type()
/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: cannot add class private field to invalid type '<invalid>'
  g_type = info.get_g_type()
/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: cannot add private field to invalid (non-instantiatable) type '<invalid>'
  g_type = info.get_g_type()
/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: cannot register existing type 'GtkAccessible'
  g_type = info.get_g_type()
/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE (interface_type)' failed
  g_type = info.get_g_type()
/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: g_once_init_leave: assertion 'result != 0' failed
  g_type = info.get_g_type()
/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
  g_type = info.get_g_type()
/usr/lib/python3.10/site-packages/gi/module.py:163: Warning: cannot register existing type 'GtkBuildable'
  g_type = info.get_g_type()

I'm using python 3.10 with pgi 0.0.11.2.

Please let me know if I can provide more useful informations.