'str' object has no attribute 'is_geographic'

[jteulade]

With this product:
s3://sertit-projects-archives/projects/2023/STAC/STORAGE/WV04/000000010004_01_P001_MUL
I get this error:

Traceback (most recent call last):
  File "/home/jovyan/jteulade/stac/scripts/test_single_product.py", line 167, in <module>
    main()
  File "/opt/conda/lib/python3.11/site-packages/sertit/s3.py", line 169, in s3_env_wrapper
    return function(*_args, **_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/stac/scripts/test_single_product.py", line 148, in main
    success = test_product_loading(AnyPath(product_path))
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/stac/scripts/test_single_product.py", line 117, in test_product_loading
    stac_item1 = prod.stac  # Set breakpoint here in VS Code
                 ^^^^^^^^^
  File "/home/jovyan/jteulade/eoreader/eoreader/products/product.py", line 1760, in stac
    self._stac = StacItem(self)
                 ^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/eoreader/eoreader/stac/stac_item.py", line 69, in __init__
    self.proj = ProjExt(prod, **kwargs)
                ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/eoreader/eoreader/stac/stac_extensions.py", line 211, in __init__
    self.epsg = self.crs().to_epsg()
                ^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/methodtools.py", line 72, in __call__
    return self.__call__(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/eoreader/eoreader/__init__.py", line 34, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/eoreader/eoreader/stac/stac_extensions.py", line 233, in crs
    return self._prod.crs()
           ^^^^^^^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/methodtools.py", line 72, in __call__
    return self.__call__(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/eoreader/eoreader/__init__.py", line 34, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/home/jovyan/jteulade/eoreader/eoreader/products/optical/maxar_product.py", line 1138, in crs
    if raw_crs.is_geographic:
       ^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'is_geographic'