updated Ubuntu from 18.04.4 to 20.04.1 and now openlp doesn't work any longer

Hi, I've updated Ubuntu from 18.04.4 to 20.04.1 and now it does not open openlp any longer.

openLP is 2.6

this is the message that appears:

Traceback (most recent call last):

File "/usr/bin/openlp", line 44, in <module>

main()

File "/usr/share/openlp/openlp/core/__init__.py", line 437, in main

sys.exit(application.run(qt_args))

File "/usr/share/openlp/openlp/core/__init__.py", line 142, in run

Registry().execute('bootstrap_initialise')

File "/usr/share/openlp/openlp/core/common/registry.py", line 137, in execute

result = function(*args, **kwargs)

File "/usr/share/openlp/openlp/core/lib/pluginmanager.py", line 60, in bootstrap_initialise

self.hook_media_manager()

File "/usr/share/openlp/openlp/core/lib/pluginmanager.py", line 122, in hook_media_manager

plugin.create_media_manager_item()

File "/usr/share/openlp/openlp/core/lib/plugin.py", line 204, in create_media_manager_item

self.media_item = self.media_item_class(self.main_window.media_dock_manager.media_dock, self)

File "/usr/share/openlp/openlp/plugins/media/lib/mediaitem.py", line 58, in __init__

super(MediaMediaItem, self).__init__(parent, plugin)

File "/usr/share/openlp/openlp/core/lib/mediamanageritem.py", line 82, in __init__

self.setup_item()

File "/usr/share/openlp/openlp/plugins/media/lib/mediaitem.py", line 90, in setup_item

self.media_controller.setup_display(self.display_controller.preview_display, False)

File "/usr/share/openlp/openlp/core/ui/media/mediacontroller.py", line 322, in setup_display

player.setup(display)

File "/usr/share/openlp/openlp/core/ui/media/vlcplayer.py", line 157, in setup

display.vlc_instance = vlc.Instance(command_line_options)

File "/usr/share/openlp/openlp/core/ui/media/vendor/vlc.py", line 1411, in __new__

return libvlc_new(len(args), args)

File "/usr/share/openlp/openlp/core/ui/media/vendor/vlc.py", line 3629, in libvlc_new

_Cfunction('libvlc_new', ((1,), (1,),), class_result(Instance),

File "/usr/share/openlp/openlp/core/ui/media/vendor/vlc.py", line 246, in _Cfunction

raise NameError('no function %r' % (name,))

NameError: no function 'libvlc_new'





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