When I try to run:
gem install sprockets 2.12.3
It says I have successfully installed sprockets but I have an error:
Successfully installed sprockets-2.12.3
Parsing documentation for sprockets-2.12.3
Done installing documentation for sprockets after 1 seconds
ERROR: Could not find a valid gem '2.12.3' (>= 0) in any repository
1 gem installed
I was wondering whether anyone knew how to fix this problem??
Thank you.