Error appear when I save the anndata object of scRNA-seq

[liqingsongplus]

My raw anndata object can read and write normally. While after running dynamo flows, error occurs when I save anndata object using the function adata.write_h5ad of scanpy.

The first error is adata.var that Can't implicitly convert non-string objects to strings. But after I adjusted all the columns to strings, I could save them as normal.

The second error is adata.uns, just like follows:

{
"name": "IORegistryError",
"message": "No method registered for writing <class 'collections.OrderedDict'> into <class 'h5py._hl.group.Group'>",
"stack": "---------------------------------------------------------------------------
IORegistryError Traceback (most recent call last)
Cell In [55], line 1
----> 1 adata1.write_h5ad("MP_sub_dynamo.h5ad")

109 write_elem(f, \"varp\", dict(adata.varp), dataset_kwargs=dataset_kwargs)
110 write_elem(f, \"layers\", dict(adata.layers), dataset_kwargs=dataset_kwargs)

--> 111 write_elem(f, "uns", dict(adata.uns), dataset_kwargs=dataset_kwargs)

IORegistryError: No method registered for writing <class 'collections.OrderedDict'> into <class 'h5py._hl.group.Group'>"
}

Have you encountered similar problems?