Não consigo instalar o Compass, por causa do erro abaixo
ERROR: Error installing compass:
ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.7.0/gems/ffi-1.14.2/ext/ffi_c
/usr/bin/ruby2.7 -I /usr/lib/ruby/2.7.0 -r ./siteconf20210113-425057-h855sa.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h
You might have to install separate package for the ruby development
environment, ruby-dev or ruby-devel for example.
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.7.0/gems/ffi-1.14.2 for inspection.
Results logged to /var/lib/gems/2.7.0/extensions/x86_64-linux/2.7.0/ffi-1.14.2/gem_make.out
Poderia me ajudar, por favor?