bin/importmap pin without arguments is raising an exception #317

$ bin/importmap pin                       
/Users/rafaelfranca/.gem/ruby/3.4.4/gems/importmap-rails-2.2.2/lib/importmap/commands.rb:183:in 'Importmap::Commands#for_each_import': undefined method 'each' for nil (NoMethodError)

        response[:imports].each(&block)
                          ^^^^^
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/importmap-rails-2.2.2/lib/importmap/commands.rb:17:in 'Importmap::Commands#pin'
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/thor-1.4.0/lib/thor/command.rb:28:in 'Thor::Command#run'
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/thor-1.4.0/lib/thor/invocation.rb:127:in 'Thor::Invocation#invoke_command'
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/thor-1.4.0/lib/thor.rb:538:in 'Thor.dispatch'
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/thor-1.4.0/lib/thor/base.rb:584:in 'Thor::Base::ClassMethods#start'
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/importmap-rails-2.2.2/lib/importmap/commands.rb:190:in '<main>'
        from /opt/rubies/3.4.4/lib/ruby/3.4.0/bundled_gems.rb:82:in 'Kernel.require'
        from /opt/rubies/3.4.4/lib/ruby/3.4.0/bundled_gems.rb:82:in 'block (2 levels) in Kernel#replace_require'
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/bootsnap-1.18.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in 'Kernel#require'
        from /Users/rafaelfranca/.gem/ruby/3.4.4/gems/zeitwerk-2.7.3/lib/zeitwerk/core_ext/kernel.rb:34:in 'Kernel#require'
        from bin/importmap:5:in '<main>'