`require': libruby.so.1.8: cannot open shared object file: No such file or directory - /app/path/vendor/local/libxml-ruby-2.4.0/lib/libxml_ruby.so

Question

we are trying to upgrade ruby version of our rails application, currently, it's running in ruby 1.8.7 as a initial step trying to upgrade 1.9.2

when we trying to run ./bundle exec rails s we are getting below error

vendor/local/polyglot-0.3.3/lib/polyglot.rb:63:in `require': libruby.so.1.8: cannot open shared object file: No such file or directory - /home/sakthi/Sakthi/trunk_upgrade_v1/vendor/local/libxml-ruby-2.4.0/lib/libxml_ruby.so

but I can see llibxml_ruby.so file that path