I created a new conda environment and then I used conda to install rstracklayer and languageserver. The problem appeared when I try to load the package rstracklayer.

Loading required package: GenomeInfoDb
Error: package or namespace load failed for ‘GenomeInfoDb’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
 there is no package called ‘GenomeInfoDbData’
Error: package ‘GenomeInfoDb’

Then I attempted to install GenomeInfoDbData. But conda said the package already installed.

Finally I used install.packages("GenomeInfoDbData")and the warning messsage was that package ‘GenomeInfoDbData’ is not available for this version of R .

R version:

R version 3.6.0 (2019-04-26) -- "Planting of a Tree"
Copyright (C) 2019 The R Foundation for Statistical Computing
Platform: x86_64-redhat-linux-gnu (64-bit)

Thanks in advance.

Here is how to install it: https://bioconductor.org/packages/release/data/annotation/html/GenomeInfoDbData.html

Your R version is ancient. Consider updating everything.