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Running "bundle install" for my Ruby on Rails project (using the button on the Rails App page in Plesk), and after running awhile, I eventually get the following error: ... Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/psych-5.1.2/ext/psych /opt/plesk/ruby/3.2.2/bin/ruby extconf.rb checking for yaml.h... no yaml.h not found *** 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. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib64 --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/opt/plesk/ruby/3.2.2/bin/$(RUBY_BASE_NAME) --with-libyaml-source-dir --without-libyaml-source-dir --with-yaml-0.1-dir --without-yaml-0.1-dir --with-yaml-0.1-include --without-yaml-0.1-include=${yaml-0.1-dir}/include --with-yaml-0.1-lib --without-yaml-0.1-lib=${yaml-0.1-dir}/lib64 --with-yaml-0.1-config --without-yaml-0.1-config --with-pkg-config --without-pkg-config --with-libyaml-dir --without-libyaml-dir --with-libyaml-include --without-libyaml-include=${libyaml-dir}/include --with-libyaml-lib --without-libyaml-lib=${libyaml-dir}/lib64 To see why this extension failed to compile, please check the mkmf.log which can be found here: /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/extensions/x86_64-linux/3.2.0-static/psych-5.1.2/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/psych-5.1.2 for inspection. Results logged to /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/extensions/x86_64-linux/3.2.0-static/psych-5.1.2/gem_make.out /opt/plesk/ruby/3.2.2/lib64/ruby/3.2.0/rubygems/ext/builder.rb:119:in `run' /opt/plesk/ruby/3.2.2/lib64/ruby/3.2.0/rubygems/ext/ext_conf_builder.rb:27:in `build' /opt/plesk/ruby/3.2.2/lib64/ruby/3.2.0/rubygems/ext/builder.rb:187:in `build_extension' /opt/plesk/ruby/3.2.2/lib64/ruby/3.2.0/rubygems/ext/builder.rb:221:in `block in build_extensions' /opt/plesk/ruby/3.2.2/lib64/ruby/3.2.0/rubygems/ext/builder.rb:218:in `each' /opt/plesk/ruby/3.2.2/lib64/ruby/3.2.0/rubygems/ext/builder.rb:218:in `build_extensions' /opt/plesk/ruby/3.2.2/lib64/ruby/3.2.0/rubygems/installer.rb:843:in `build_extensions' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/rubygems_gem_installer.rb:76:in `build_extensions' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/rubygems_gem_installer.rb:28:in `install' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/source/rubygems.rb:205:in `install' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/installer/gem_installer.rb:54:in `install' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/installer/gem_installer.rb:16:in `install_from_spec' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/installer/parallel_installer.rb:132:in `do_install' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/installer/parallel_installer.rb:123:in `block in worker_pool' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/worker.rb:62:in `apply_func' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/worker.rb:57:in `block in process_queue' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/worker.rb:54:in `loop' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/worker.rb:54:in `process_queue' /home/sigma013.heliohost.org/vendor/bundle/ruby/3.2.0/gems/bundler-2.5.6/lib/bundler/worker.rb:90:in `block (2 levels) in create_threads' An error occurred while installing psych (5.1.2), and Bundler cannot continue. In Gemfile: debug was resolved to 1.9.1, which depends on irb was resolved to 1.12.0, which depends on rdoc was resolved to 6.6.2, which depends on psych ERROR:__main__:Command '['/usr/local/psa/admin/sbin/filemng', 'sigma013', 'exec', '/home/sigma013.heliohost.org/', '/bin/bash', '-l', '-c', 'bundle install --path vendor/bundle']' returned non-zero exit status 5. Is there anything I need to do to have `yaml.h` installed? This particular ruby app is pretty much using the default rails setup, and the `psych` gem seems to be part of it. Thanks in advance! My subdomain is `sigma013` on Tommy

I'm new to Ruby, and just installed the 'net-ssh' gem to simply interact with SSH servers, a function which I need. The gem is properly located in its folder. I was not sure how to 'include' the gem in my RUBY script as instructed using the line: $:.push("/home/dangmoo/ruby/gems"), so I simply pasted it to the beginning. However, when I try to run a script using this gem, things don't work. This is how the script looks like: Although the script should simply return the output of the command 'ls' from my Linux SSH - it only output the HTML line 'This is a test' while the SSH part is totally ignored (without an error message). Do you see anything wrong here? Can you help me fix this? Thanks!