Error executing 'msfconsole and bundle install' on termux - Android

I am getting the below error when executing the 'bundle install' command. So I run 'msfconsole' and get this: $ msfconsole waiting for server to shut down....2019-05-08 11:04:55.057 AEST LOG: received fast shutdown request 2019-05-08 11:04:55.058 AEST LOG: aborting any active transactions 2019-05-08 11:04:55.059 AEST LOG: background worker "logical replication launcher" (PID 14807) exited with exit code 1 2019-05-08 11:04:55.060 AEST LOG: shutting down 2019-05-08 11:04:55.091 AEST LOG: database system is shut down done server stopped waiting for server to start....2019-05-08 11:04:55.204 AEST LOG: listening on IPv4 address "127.0.0.1", port 5432 2019-05-08 11:04:55.204 AEST LOG: listening on Unix socket "/data/data/com.termux/files/usr/tmp/.s.PGSQL.5432" 2019-05-08 11:04:55.221 AEST LOG: database system was shut down at 2019-05-08 11:04:55 AEST 2019-05-08 11:04:55.226 AEST LOG: database system is ready to accept connections done server started Could not find nokogiri-1.10.1 in any of the sources Run bundle install to install missing gems. Then I run 'bundle install' and get this: $ bundle install The Gemfile specifies no dependencies Bundle complete! 0 Gemfile dependencies, 1 gem now installed. Use bundle info [gemname] to see where a bundled gem is installed. $ I also tried installing 'nokogiri' but three an error: $install nokogiri Building native extensions. This could take a while... ERROR: Error installing nokogiri: ERROR: Failed to build gem native extension. current directory: /data/data/com.termux/files/usr/lib/ruby/gems/2.6.0/gems/nokogiri-1.10.3/ext/nokogiri /data/data/com.termux/files/usr/bin/ruby -I /data/data/com.termux/files/usr/lib/ruby/site_ruby/2.6.0 -r ./siteconf20190508-18809-1xe5kij.rb extconf.rb checking if the C compiler accepts ... yes Building nokogiri using packaged libraries. Using mini_portile version 2.4.0 Static linking is disabled. checking for gzdopen() in -lz... no zlib is missing; necessary for building libxml2 *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. To see why this extension failed to compile, please check the mkmf.log which can be found here: /data/data/com.termux/files/usr/lib/ruby/gems/2.6.0/extensions/aarch64-linux/2.6.0/nokogiri-1.10.3/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /data/data/com.termux/files/usr/lib/ruby/gems/2.6.0/gems/nokogiri-1.10.3 for inspection. Results logged to /data/data/com.termux/files/usr/lib/ruby/gems/2.6.0/extensions/aarch64-linux/2.6.0/nokogiri-1.10.3/gem_make.out $ Why is this happening, and how do I fix it?