Rlang Error on Rstudio 2020 - Error: package or namespace load failed for ‘...’ in loadNamespace

General
1 
Error: package or namespace load failed for ‘ggplot2’ in 
loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
 namespace ‘rlang’ 0.4.6 is already loaded, but >= 0.4.7 is required

How do I solve this error?I have even tried uninstalling and installing r.

2

The rlang version is the root problem. The error states that the current version is 0.4.6 but 0.4.7 is required. From the console

install.packages("rlang")

should fix this.

3

I tried it but I still receive the same message:

update.packages("rlang")
> install.packages("dfidx")
Installing package into ‘C:/Users/41789/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)
trying URL 'https://stat.ethz.ch/CRAN/bin/windows/contrib/4.0/dfidx_0.0-3.zip'
Content type 'application/zip' length 431458 bytes (421 KB)
downloaded 421 KB

package ‘dfidx’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
        C:\Users\41789\AppData\Local\Temp\RtmpctPpjL\downloaded_packages
> library(dfidx)
Error: package or namespace load failed for ‘dfidx’ in 
loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
 namespace ‘rlang’ 0.4.6 is already loaded, but >= 0.4.7 is required
4

In a fresh session

library(rlang)
sessionInfo()

Does rlang appear? Which version?

5

Yes. It appears as version 0.4.6

6

Try removing

remove.packages(rlang)

then

install.packages("rlang"
7

It resolved the issue. Thank you Technocrat

8

Although I still have the original issue to install the required package, but the type of error seems to be the same. So, I will continue doing the same thing for the new error

library(mlogit)
Loading required package: dfidx
Error: package or namespace load failed for ‘dfidx’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
namespace ‘vctrs’ 0.3.1 is already loaded, but >= 0.3.2 is required
Error: package ‘dfidx’ could not be loaded

10

That's the way to proceed. Come back if you encounter difficulties.