Error: package or namespace load failed for ‘MFSelector’:

I have installed MFSelector package in Rstudio successfully, but I am struggling to load the package using the library function and facing this kind of error:

Loading required package: parallel
Error: package or namespace load failed for ‘MFSelector’:
package ‘MFSelector’ was installed before R 4.0.0: please re-install it

Can you advise how to fix it?

Have you tried update things ?

Yes, I tried to update things using following line:

update.packages(checkBuilt=TRUE, ask=FALSE)

But faced to the same error!

Sorry, let me check just to be sure; the R environment you’re managing is dependent/running on Galaxy?

No, I am using Rstudio server on the online Galaxy in!

Well, it is on Galaxy. Ok. I did reproduce your error. I’m test some things and will reply if it works.
In the meantime, the folks from Galaxy may have a better answer.