I had the same problem. Upgraded to R version 4.0.1 and continued to have the same problem. Below is what I did and it seems to work now:
For the question "Do you want to install from sources ... that needs compilation", answer "no", then it appears as though it would install.
I also used "install.packages(“mnormt")" first. And after it is installed, I used "install.pakcages("psych")"
Good luck. Hope it helps.