Ultralytics 8.4.21  Python-3.12.6 torch-2.9.1+cpu CPU (12th Gen Intel Core i5-12500)
WARNING 'nms=True' is not available for end2end models. Forcing 'nms=False'.
YOLO26n summary (fused): 122 layers, 2,376,006 parameters, 0 gradients, 5.2 GFLOPs

PyTorch: starting from 'best.pt' with input shape (1, 3, 640, 640) BCHW and output shape(s) (1, 300, 6) (14.8 MB)

TensorFlow SavedModel: starting export with tensorflow 2.19.1...
ERROR TensorFlow SavedModel: export failure 8.8s: [WinError 32] The process cannot access the file because it is being used by another process: 'best_saved_model\\tmp_tflite_int8_calibration_images.npy'
python : Traceback (most 
recent call last):
At line:1 char:1
+ python -c "from 
ultralytics import YOLO; YO
LO('best.pt').export(forma 
...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~
    + CategoryInfo         
     : NotSpecified: (Tra  
  ceback (most recent ca   
 ll last)::String) [],     
RemoteException
    + FullyQualifiedErrorI 
   d : NativeCommandError
 
  File "<string>", line 1, 
in <module>
  File "C:\Users\enzo\AppDa
ta\Roaming\Python\Python312
\site-packages\ultralytics\
engine\model.py", line 
712, in export
    return 
Exporter(overrides=args, _c
allbacks=self.callbacks)(mo
del=self.model)
           ^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\enzo\AppDa
ta\Roaming\Python\Python312
\site-packages\ultralytics\
engine\exporter.py", line 
596, in __call__
    f[5], keras_model = 
self.export_saved_model()
                        
^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\enzo\AppDa
ta\Roaming\Python\Python312
\site-packages\ultralytics\
engine\exporter.py", line 
254, in outer_func
    raise e
  File "C:\Users\enzo\AppDa
ta\Roaming\Python\Python312
\site-packages\ultralytics\
engine\exporter.py", line 
246, in outer_func
    f = inner_func(*args, 
**kwargs)  # exported 
file/dir or tuple of 
(file/dir, *)
        
^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\enzo\AppDa
ta\Roaming\Python\Python312
\site-packages\ultralytics\
engine\exporter.py", line 
1085, in export_saved_model
    shutil.rmtree(f)  # 
delete output folder
    ^^^^^^^^^^^^^^^^
  File "C:\Python312\Lib\sh
util.py", line 781, in 
rmtree
    return 
_rmtree_unsafe(path, onexc)
           
^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python312\Lib\sh
util.py", line 635, in 
_rmtree_unsafe
    onexc(os.unlink, 
fullname, err)
  File "C:\Python312\Lib\sh
util.py", line 633, in 
_rmtree_unsafe
    os.unlink(fullname)
PermissionError: [WinError 
32] The process cannot 
access the file because it 
is being used by another 
process: 'best_saved_model\
\tmp_tflite_int8_calibratio
n_images.npy'