Ubuntu 20.04.6 LTS Ok

[juanpc2018]

https://kx.studio/Repositories

installed over older

$ carla
Carla 2.5.9 started, status:
  Python version: 3.8.10
  Qt version:     5.15.2
  PyQt version:   5.14.1
  Binary dir:     /usr/lib/carla
  Resources dir:  /usr/share/carla/resources
Traceback (most recent call last):
  File "/usr/share/carla/carla", line 46, in <module>
    host = initHost(initName, libPrefix, False, False, True)
  File "/usr/share/carla/carla_host.py", line 3255, in initHost
    host = HostClass() if HostClass is not None else CarlaHostQtDLL(libname, loadGlobal)
  File "/usr/share/carla/carla_backend_qt.py", line 96, in __init__
    CarlaHostDLL.__init__(self, libName, loadGlobal)
  File "/usr/share/carla/carla_backend.py", line 2638, in __init__
    self.lib.carla_standalone_host_init.argtypes = None
  File "/usr/lib/python3.8/ctypes/__init__.py", line 386, in __getattr__
    func = self.__getitem__(name)
  File "/usr/lib/python3.8/ctypes/__init__.py", line 391, in __getitem__
    func = self._FuncPtr((name_or_ordinal, self))
AttributeError: /usr/lib/carla/libcarla_standalone2.so: undefined symbol: carla_standalone_host_init

E: /tmp/apt-dpkg-install-VF7aZl/50-carla_6%3a2.5.9-1kxstudio1_amd64.deb: 
trying to overwrite 
'/usr/lib/lv2/carla.lv2/audiofile.ttl',
which is also in package carla-lv2 2.1-0ubuntu1

removed: carla-lv2
upgraded: carla

works ok.