Error in if (rank_ind == nrow(df_rep)) { : argument is of length zero

[ElyasMo]

Any ideas why this is happenig?

scRNA.spl$ChNs <- RunNMF(scRNA.spl$ChNs,assay="RNA",slot = "scale.data", features = VariableFeatures(scRNA.spl$ChNs),rescale = FALSE)
running with sparse optimization

REPLICATE 1 / 3
k = 2 , rep = 1
test_error = 3.0442e-02
overfit (overfit_score = 1.5850e-03 )
Warning: argument is not numeric or logical: returning NA best rank in replicate = NA

Error in if (rank_ind == nrow(df_rep)) { : argument is of length zero

Here is some info about the object:

scRNA.spl$ChNs
An object of class Seurat
20106 features across 1304 samples within 1 assay
Active assay: RNA (20106 features, 377 variable features)
3 dimensional reductions calculated: pca_celltypes, harmony_celltypes, umap

[whitneyt1]

I am having the same issue