Here is the command I entered:
Mdn@Macbook ~ % gem install activesupport -v 6.1.7.6
And here is the response I got:
Fetching zeitwerk-2.6.11.gem Fetching activesupport-6.1.7.6.gem ERROR: While executing gem ... (Gem::FilePermissionError) You don t have write permissions for the /Library/Ruby/Gems/2.6.0 directory.
Please note:
I am the owner and admin of this computer, so I am confused with the message that I don t have write permissions.