Update app.py

app.py

@@ -1,6 +1,9 @@
-import sys, types
+import sys, types, importlib.machinery
 
-sys.modules['flash_attn'] = types.ModuleType('flash_attn')
+spec = importlib.machinery.ModuleSpec('flash_attn', loader=None)
+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: []