Problem with useMart in biomaRt

Hi, I have been trying to ‘translate’ some M. musculus Ensembl exon IDs (format ‘ENSMUSE0000XXXXXXX’) into their genes of origin and found another post that demonstrates how to do so using biomaRt. However, although I think I’ve installed biomaRt on R:

if (!requireNamespace("BiocManager", quietly = TRUE))
install.packages("BiocManager")

BiocManager::install("biomaRt")

(I get a message saying

Warning message:
package(s) not installed when version(s) same as
current; use force = TRUE to re-install:
‘biomaRt’

)

I then have trouble with useMart, and get a message saying

could not find function “useMart”

Do you have an idea why this might be happening?

Thanks in advance!