Ruby-on-Rails: Don’t know how to build task ‘start’ when run ‘cap production deploy’ for capistrano 3.8.0 with Rails

I tried to deploy my rails site using capistrano.
So when i ran
[code type=ruby]cap production deploy

This is what i got
[code type=ruby]
(Backtrace restricted to imported tasks)
cap aborted!
Don’t know how to build task ‘start’ (see –tasks)

Tasks: TOP => production

This is my cap file
[code type=ruby]
# Load DSL and Setup Up Stages
require ‘capistrano/setup’
require ‘capistrano/deploy’

require ‘capistrano/rails’
require ‘capistrano/bundler’
require ‘capistrano/rvm’
require ‘capistrano/puma’
require ‘capistrano/scm/git’

install_plugin Capistrano::SCM::Git

# Loads custom tasks from `lib/capistrano/tasks’ if you have any defined.
Dir.glob(‘lib/capistrano/tasks/*.rake’).each { |r| import r }

This is my deploy.rb
[code type=ruby]
set :repo_url, ‘xxx’
set :application, ‘xxx’
set :user, ‘yyy’
set :puma_threads, [4, 16]
set :puma_workers, 0

set :pty, true
set :use_sudo, false
set :stages, [“staging”, “production”]
set :default_stage, “production”
set :deploy_via, :remote_cache
set :deploy_to, “/home/#{fetch(:user)}/apps/#{fetch(:application)}”
set :puma_bind, “unix://#{shared_path}/tmp/sockets/#{fetch(:application)}-puma.sock”
set :puma_state, “#{shared_path}/tmp/pids/puma.state”
set :puma_pid, “#{shared_path}/tmp/pids/puma.pid”
set :puma_access_log, “#{release_path}/log/puma.error.log”
set :puma_error_log, “#{release_path}/log/puma.access.log”
set :ssh_options, { forward_agent: true, user: fetch(:user), keys: %w(~/.ssh/id_rsa) }
set :puma_preload_app, true
set :puma_worker_timeout, nil
set :puma_init_active_record, true # Change to false when not using ActiveRecord

namespace :puma do
desc ‘Create Directories for Puma Pids and Socket’
task :make_dirs do
on roles(:app) do
execute “mkdir #{shared_path}/tmp/sockets -p”
execute “mkdir #{shared_path}/tmp/pids -p”
end
end

before :start, :make_dirs
end

namespace :deploy do
desc “Make sure local git is in sync with remote.”
task :check_revision do
on roles(:app) do
unless `git rev-parse HEAD` == `git rev-parse origin/master`
puts “WARNING: HEAD is not the same as origin/master”
puts “Run `git push` to sync changes.”
exit
end
end
end

desc ‘Initial Deploy’
task :initial do
on roles(:app) do
before ‘deploy:restart’, ‘puma:start’
invoke ‘deploy’
end
end

desc ‘Restart application’
task :restart do
on roles(:app), in: :sequence, wait: 5 do
invoke ‘puma:restart’
end
end

before :starting, :check_revision
after :finishing, :compile_assets
after :finishing, :cleanup
end

So the code above is working before but when i update my gems then i can not deploy my app anymore.

So how can i fix this?

Add install_plugin Capistrano::Puma into your Capfile after require 'capistrano/puma'.

capistrano3-puma moved to 3.0 a few days ago. This line is required for loading default puma tasks in this version.

See https://github.com/seuros/capistrano-puma#usage

Source: http://stackoverflow.com/questions/43014993/dont-know-how-to-build-task-start-when-run-cap-production-deploy-for-capist

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