Update app.py

app.py

@@ -5,8 +5,9 @@ mod = types.ModuleType('flash_attn')
 mod.__spec__ = spec
 sys.modules['flash_attn'] = mod
 
-import transformers.dynamic_module_utils as dmu
-dmu.check_imports = lambda *args, **kwargs: []
+import transformers.utils.import_utils as _import_utils
+_import_utils._is_package_available   = lambda pkg: False
+_import_utils.is_flash_attn_2_available = lambda: False
 
 import huggingface_hub as _hf_hub
 _hf_hub.cached_download = _hf_hub.hf_hub_download