error on colab: WARNING[XFORMERS]: xFormers can't load C++/CUDA extensions. xFormers was built for:
    PyTorch 2.7.0+cu126 with CUDA 1206 (you have 2.6.0+cu124)
    Python  3.11.12 (you have 3.11.12)
  Please reinstall xformers (see https://github.com/facebookresearch/xformers#installing-xformers)
  Memory-efficient attention, SwiGLU, sparse and more won't be available.
  Set XFORMERS_MORE_DETAILS=1 for more details
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/dist-packages/diffusers/utils/import_utils.py", line 843, in _get_module
    return importlib.import_module("." + module_name, self.__name__)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1126, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/usr/local/lib/python3.11/dist-packages/diffusers/models/autoencoders/__init__.py", line 1, in <module>
    from .autoencoder_asym_kl import AsymmetricAutoencoderKL
  File "/usr/local/lib/python3.11/dist-packages/diffusers/models/autoencoders/autoencoder_asym_kl.py", line 23, in <module>
    from .vae import DecoderOutput, DiagonalGaussianDistribution, Encoder, MaskConditionDecoder
  File "/usr/local/lib/python3.11/dist-packages/diffusers/models/autoencoders/vae.py", line 24, in <module>
    from ..attention_processor import SpatialNorm
  File "/usr/local/lib/python3.11/dist-packages/diffusers/models/attention_processor.py", line 35, in <module>
    import xformers.ops
  File "/usr/local/lib/python3.11/dist-packages/xformers/ops/__init__.py", line 9, in <module>
    from .fmha import (
  File "/usr/local/lib/python3.11/dist-packages/xformers/ops/fmha/__init__.py", line 10, in <module>
    from . import (
  File "/usr/local/lib/python3.11/dist-packages/xformers/ops/fmha/flash3.py", line 58, in <module>
    from ... import _C_flashattention3  # type: ignore[attr-defined]
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: /usr/local/lib/python3.11/dist-packages/xformers/_C_flashattention3.so: undefined symbol: _ZN3c105ErrorC2ENS_14SourceLocationENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/dist-packages/diffusers/utils/import_utils.py", line 843, in _get_module
    return importlib.import_module("." + module_name, self.__name__)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/usr/local/lib/python3.11/dist-packages/diffusers/pipelines/pipeline_utils.py", line 47, in <module>
    from ..models import AutoencoderKL
  File "<frozen importlib._bootstrap>", line 1229, in _handle_fromlist
  File "/usr/local/lib/python3.11/dist-packages/diffusers/utils/import_utils.py", line 833, in __getattr__
    module = self._get_module(self._class_to_module[name])
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/diffusers/utils/import_utils.py", line 845, in _get_module
    raise RuntimeError(
RuntimeError: Failed to import diffusers.models.autoencoders.autoencoder_kl because of the following error (look up to see its traceback):
/usr/local/lib/python3.11/dist-packages/xformers/_C_flashattention3.so: undefined symbol: _ZN3c105ErrorC2ENS_14SourceLocationENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/content/FLUX.1-schnell/app.py", line 6, in <module>
    from diffusers import DiffusionPipeline
  File "<frozen importlib._bootstrap>", line 1229, in _handle_fromlist
  File "/usr/local/lib/python3.11/dist-packages/diffusers/utils/import_utils.py", line 834, in __getattr__
    value = getattr(module, name)
            ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/diffusers/utils/import_utils.py", line 833, in __getattr__
    module = self._get_module(self._class_to_module[name])
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/diffusers/utils/import_utils.py", line 845, in _get_module
    raise RuntimeError(
RuntimeError: Failed to import diffusers.pipelines.pipeline_utils because of the following error (look up to see its traceback):
Failed to import diffusers.models.autoencoders.autoencoder_kl because of the following error (look up to see its traceback):
/usr/local/lib/python3.11/dist-packages/xformers/_C_flashattention3.so: undefined symbol: _ZN3c105ErrorC2ENS_14SourceLocationENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE