I am trying to install an instagram-crawler by using the gem command:
gem install instagram-crawler
But I am receiving the following error:
Building native extensions. This could take a while... ERROR: Error installing instagram-crawler: ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.5.0/gems/nokogiri-1.10.1/ext/nokogiri /usr/bin/ruby2.5
-r ./siteconf20190205-5483-1zru4h.rb extconf.rb mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.5.0/gems/nokogiri-1.10.1 for inspection. Results logged to /var/lib/gems/2.5.0/extensions/x86_64-linux/2.5.0/nokogiri-1.10.1/gem_make.out