The last version of activesupport (>= 5.0, < 8) to support your Ruby & RubyGems was 6.1.7.4. Try installing it with `gem install activesupport -v 6.1.7.4` and then running the current command again
activesupport requires Ruby version >= 2.7.0. The current ruby version is 2.6.10.210.