I try to install packages in RStudio (R version 4.1.1.) as usual:
The system asks "Would you like to create a personal library 'C:/User/????/Documents/R'/win-library/4.1 to install package into?
Then it writes a mistake. It write that unable to install due to default library 'C:/Program Files/R/R-4.1.1/library' is not writeable.
There wasn't such problems in version 3. What happens and how to solve this problem?