问在sc.metabolism.seurat包里找不到要改的函数？

求助，运行sc.metabolism.Seurat的时候弹出报错：

Error: (converted from warning) 'as(<matrix>, "dgeMatrix")' is deprecated.

Use 'as(as(as(., "dMatrix"), "generalMatrix"), "unpackedMatrix")' instead.

See help("Deprecated") and help("Matrix-deprecated").

In addition: Warning message:

In readSignaturesInput(signatures) : NAs introduced by coercion

看着应该是函数 as(, "dgeMatrix")'  的使用方式已经被弃用了，替代的语法变为as(as(as(., "dMatrix"), "generalMatrix"), "unpackedMatrix")

但是在sc.metabolism.Seurat包里没找到相应的语句，怎么办