#1388 AttributeError: type object 'torch._C._distributed_c10d.BackendType' has no attribute 'XCCL'

Traceback (most recent call last):
File "videotrans\mainwin\_actions_sub.py", line 97, in check_cuda
File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\__init__.py", line 2126, in
File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\functional.py", line 8, in

from torch import _VF, Tensor

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\nn\__init__.py", line 8, in

from torch.nn.modules import *  # usort: skip # noqa: F403

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\nn\modules\__init__.py", line 1, in

from .module import Module  # usort: skip

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\nn\modules\module.py", line 17, in

overload,

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\utils\__init__.py", line 8, in

from torch.utils import (

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\utils\data\__init__.py", line 1, in

from torch.utils.data.dataloader import (

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\utils\data\dataloader.py", line 21, in

import torch.utils.data.graph_settings

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\distributed\__init__.py", line 122, in

from .device_mesh import DeviceMesh, init_device_mesh

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\distributed\device_mesh.py", line 40, in

_find_pg_by_ranks_and_tag,

File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "pyimod02_importers.py", line 457, in exec_module
File "torch\distributed\distributed_c10d.py", line 236, in

initial value of some fields. Users should neither use it directly

File "torch\distributed\distributed_c10d.py", line 287, in Backend

devices: Optional[Union[str, List[str]]] = None,

AttributeError: type object 'torch._C._distributed_c10d.BackendType' has no attribute 'XCCL'