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Full Discussion: Problems starting webserver (WEBRick) on Rails
Top Forums Web Development Problems starting webserver (WEBRick) on Rails Post 303040530 by alexcol on Wednesday 30th of October 2019 06:59:17 PM
Old 10-30-2019
Problems starting webserver (WEBRick) on Rails
Good afternoon:
I need your help please:
Im new at web applications and i started taking a Ruby on Rails course and as a part of the installations i followed the instructions given on page:
Code:
http://railsapps.github.io/installrubyonrails-ubuntu.html

I followed every step and id did not yield any errors so far
1 install RVM and its updates, rails and its updates, ruby and its updates, gems and etcetera

But by the time i started the web server it yields me a bunch of errors:

Code:
rails server

Code:
	27: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
	26: from /home/ubuntu/hello_WWW/config/environment.rb:5:in `<main>'
	25: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0/lib/rails/application.rb:363:in `initialize!'
	24: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0/lib/rails/initializable.rb:60:in `run_initializers'
	23: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
	22: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
	21: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
	20: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `call'
	19: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:347:in `each'
	18: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
	17: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
	16: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
	15: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
	14: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0/lib/rails/initializable.rb:61:in `block in run_initializers'
	13: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0/lib/rails/initializable.rb:32:in `run'
	12: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0/lib/rails/initializable.rb:32:in `instance_exec'
	11: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/railtie.rb:84:in `block in <class:Engine>'
	10: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker.rb:27:in `bootstrap'
	 9: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/commands.rb:14:in `bootstrap'
	 8: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/manifest.rb:18:in `refresh'
	 7: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/manifest.rb:83:in `load'
	 6: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/configuration.rb:47:in `public_manifest_path'
	 5: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/configuration.rb:43:in `public_output_path'
	 4: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/configuration.rb:39:in `public_path'
	 3: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/configuration.rb:80:in `fetch'
	 2: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/configuration.rb:84:in `data'
	 1: from /home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/configuration.rb:87:in `load'
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/webpacker-4.0.7/lib/webpacker/configuration.rb:91:in `rescue in load': Webpacker configuration file not found /home/ubuntu/hello_WWW/config/webpacker.yml. Please run rails webpacker:install Error: No such file or directory @ rb_sysopen - /home/ubuntu/hello_WWW/config/webpacker.yml (RuntimeError)

and when i see the rails vesrion: rails -v it prints out the following:

Code:
ubuntu@ubuntu-N53SV:~/hello_WWW$ rails -v
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/fileutils/version.rb:4: warning: already initialized constant FileUtils::VERSION
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/fileutils-1.3.0/lib/fileutils/version.rb:4: warning: previous definition of VERSION was here
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/fileutils.rb:1267: warning: already initialized constant FileUtils::Entry_::S_IF_DOOR
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/fileutils-1.3.0/lib/fileutils.rb:1285: warning: previous definition of S_IF_DOOR was here
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/fileutils.rb:1540: warning: already initialized constant FileUtils::Entry_::DIRECTORY_TERM
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/fileutils-1.3.0/lib/fileutils.rb:1568: warning: previous definition of DIRECTORY_TERM was here
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/fileutils.rb:1595: warning: already initialized constant FileUtils::OPT_TABLE
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/fileutils-1.3.0/lib/fileutils.rb:1626: warning: previous definition of OPT_TABLE was here
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/fileutils.rb:1649: warning: already initialized constant FileUtils::LOW_METHODS
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/fileutils-1.3.0/lib/fileutils.rb:1685: warning: previous definition of LOW_METHODS was here
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0/fileutils.rb:1656: warning: already initialized constant FileUtils::METHODS
/home/ubuntu/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/fileutils-1.3.0/lib/fileutils.rb:1692: warning: previous definition of METHODS was here
Rails 6.0.0

the third problem that i face is when the terminal is closed and i start a new sesion the commnads are not recognized and the configuration is lost:
Code:
rails -v
order not found
try: sudo apt install <nombre del paquete deb

I appreciate your help in advanced
 

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