R在安装Bioconductor包时，一直报错：
Bioconductor version 3.13 (BiocManager 1.30.16), R 4.1.0 (2021-05-18)
Installation paths not writeable, unable to update packages
path: C:/Program Files/R/R-4.1.0/library
packages:
Matrix, mgcv, survival
Warning message:
package(s) not installed when version(s) same as current; use force = TRUE to re-install: 'GenomicFeatures' 'AnnotationDbi'
求各路神仙指点！