unable to install a functioning app on a fresh environment

[zelhar]

Tried installing snapatac2 with micromamba either from conda-forge or with pip.
tried creating a fresh new environment and just install snapatac and the minimum requirements
every time I try to run the pbmc tutorial it runs into errors as soon as I get to snap.pl.frag_size_distr(data, interactive=False) (and the other plot too)

and then again on snap.tl.umap(data).

I suspect your latest version is incompatible with the latest versions of some of the dependencies.

[zelhar]

Here is the exact error from snap.pl.frag_size_ditr:

2025-08-04 11:40:55 - INFO - Computing fragment size distribution...
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[4], line 1
----> 1 snap.pl.frag_size_distr(data, interactive=False)

File ~/micromamba/envs/multi/lib/python3.11/site-packages/snapatac2/plotting/__init__.py:135, in frag_size_distr(adata, use_rep, max_recorded_size, **kwargs)
    130 fig.add_trace(go.Scatter(x=x[1:], y=y[1:], mode='lines'))
    131 fig.update_layout(
    132     xaxis_title="Fragment size",
    133     yaxis_title="Count",
    134 )
--> 135 return render_plot(fig, **kwargs)

File ~/micromamba/envs/multi/lib/python3.11/site-packages/snapatac2/plotting/_base.py:286, in render_plot(fig, width, height, interactive, show, out_file, scale)
    284     else:
    285         from IPython.display import Image
--> 286         return Image(fig.to_image(format="png"))
    288 # return plot object
    289 if not show and not out_file: return fig

File ~/micromamba/envs/multi/lib/python3.11/site-packages/plotly/basedatatypes.py:3801, in BaseFigure.to_image(self, *args, **kwargs)
   3796     if kwargs.get("engine", None):
   3797         warnings.warn(
   3798             ENGINE_PARAM_DEPRECATION_MSG, DeprecationWarning, stacklevel=2
   3799         )
-> 3801 return pio.to_image(self, *args, **kwargs)

File ~/micromamba/envs/multi/lib/python3.11/site-packages/plotly/io/_kaleido.py:398, in to_image(fig, format, width, height, scale, validate, engine)
    396     if ENABLE_KALEIDO_V0_DEPRECATION_WARNINGS:
    397         warnings.warn(KALEIDO_DEPRECATION_MSG, DeprecationWarning, stacklevel=2)
--> 398     img_bytes = scope.transform(
    399         fig_dict, format=format, width=width, height=height, scale=scale
    400     )
    402 return img_bytes

AttributeError: 'NoneType' object has no attribute 'transform'