Failure to convert SingleCellExperiment (trajectory analysis object) to h5ad

[Yanst86]

Hello,

I have a SingleCellExperiment, in which I computed Trajectory of Single-Cell RNA-seq data using Slingshot, which I want to convert to h5ad/Anndata.

I used this code:

library(reticulate)
use_condaenv('r-sctools')
sceasy::convertFormat(Traj_RNA, from="sce", to="anndata", outFile='D:/Python_coding/Trajectory_Analysis/Slingshot_Trajectory.h5ad')

And got this error:

Loading required package: TrajectoryUtils
Error in as.vector(x) : no method for coercing this S4 class to a vector

Here is the structure of my object:

Traj_RNA
class: SingleCellExperiment
dim: 36601 39215
metadata(0):
assays(2): counts logcounts
rownames(36601): MIR1302-2HG FAM138A ... AC007325.4 AC007325.2
rowData names(0):
colnames(39215): C01_AAACCCAAGCAATTCC-1 C01_AAACCCACACGTTGGC-1 ... R264_TTTGTTGCAGCGTACC-1
R264_TTTGTTGGTCCACACG-1
colData names(15): orig.ident nCount_RNA ... slingPseudotime_3 slingPseudotime_4
reducedDimNames(2): PCA UMAP
mainExpName: RNA
altExpNames(0):

Is the conversion of this type of object supported? If so, what is the fix to my problem?

Thanks in advance,
Yan