Ruby Console not working on Codecademy

Hi All - can somebody help? I updated macos but now I can’t run any code from that workspace (or any future workspace); does anyone know why or how to debug?

/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require':LoadError: cannot load such file -- ./Ruby/1. /usr/lib/ruby/2.3.0/irb/magic-file.rb:8:in initialize’: No such file or directory @ rb_sysopen - mathroundup.rb (Errno::ENOENT)
from /usr/lib/ruby/2.3.0/irb/magic-file.rb:8:in open' from /usr/lib/ruby/2.3.0/irb/magic-file.rb:8:in open’
from /usr/lib/ruby/2.3.0/irb/input-method.rb:101:in initialize' from /usr/lib/ruby/2.3.0/irb/context.rb:85:in new’
from /usr/lib/ruby/2.3.0/irb/context.rb:85:in initialize' from /usr/lib/ruby/2.3.0/irb.rb:426:in new’
from /usr/lib/ruby/2.3.0/irb.rb:426:in initialize' from /usr/lib/ruby/2.3.0/irb.rb:381:in new’
from /usr/lib/ruby/2.3.0/irb.rb:381:in start' from /usr/bin/irb:11:in