单细胞样本如何整理成一个文件？

GEMO数据库h5单细胞测序，在合并不同样本时用harmony函数一直报错：Error in `.SelectFeatures()`:

! None of the features provided are present in the feature set

Backtrace:

1. scRNA_harmo %>% ...

3. Seurat:::FindVariableFeatures.Seurat(...)

5. Seurat:::FindVariableFeatures.StdAssay(...)

7. SeuratObject:::VariableFeatures.Assay5(...)

9. SeuratObject:::.SelectFeatures.list(...)

用的是R语言。

scRNA_harmo %>% FindVariableFeatures(.,selection.method = "vst", nfeatures = 2000)，就是这句代码报错。