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POJob failed to load: uninitialized constant Syck::Syck
 

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  1. POJob failed to load: uninitialized constant Syck::Syck
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    <p>I am running a method in the background using delayed-job (collectiveideas fork)</p> <p>The method I am running is shown below, which fetches the price of the isbn:</p> <pre><code> def update_prices(isbn13) @amazon = Nokogiri::XML(open("http://www.amazon.com/s/?url=search-alias%3Daps&amp;field-keywords=#{isbn13}")) price = @amazon.search('span.listprice').first.text.gsub('$', '') book = Book.find_by_isbn13(isbn13) book.update_attribute(:amazon_us_price, price) end handle_asynchronously :update_prices </code></pre> <p>Now when I run this, the job is added to the database but encounters an error when running. The error is quite large, but I think the gist of it comes from the first line: Job failed to load: uninitialized constant Syck::Syck.</p> <pre><code>{Job failed to load: uninitialized constant Syck::Syck. Handler: "--- !ruby/struct:Delayed::PerformableMethod object: &amp;id005 !ruby/object:BooksController _action_name: show _config: !omap [] _env: &amp;id001 GATEWAY_INTERFACE: CGI/1.1 PATH_INFO: /books/9780425160985 QUERY_STRING: \"\" REMOTE_ADDR: 127.0.0.1 REMOTE_HOST: localhost REQUEST_METHOD: GET REQUEST_URI: http://localhost:3000/books/9780425160985 SCRIPT_NAME: \"\" SERVER_NAME: localhost SERVER_PORT: \"3000\" SERVER_PROTOCOL: HTTP/1.1 SERVER_SOFTWARE: WEBrick/1.3.1 (Ruby/1.9.2/2010-08-18) HTTP_HOST: localhost:3000 HTTP_CONNECTION: keep-alive HTTP_REFERER: http://localhost:3000/books/search?utf8=%E2%9C%93&amp;keywords=hornets+nest&amp;commit=Search HTTP_ACCEPT: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 HTTP_USER_AGENT: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.107 Safari/534.13 HTTP_ACCEPT_ENCODING: gzip,deflate,sdch HTTP_ACCEPT_LANGUAGE: en-US,en;q=0.8 HTTP_ACCEPT_CHARSET: ISO-8859-1,utf-8;q=0.7,*;q=0.3 HTTP_COOKIE: _bookcloud_session=BAh7B0kiD3Nlc3Npb25faWQGOgZFRiIlMTNkZWFlYTdiYjVjN2IzZDAyOTU1MDc1NTc1ZDJlZDBJIhBfY3NyZl90b2tlbgY7AEZJIjFrUHJoT0RlZmZoSzIrSVdFdFJNbGxMckxENEZnMTM1STZuQUJCdHJuak1BPQY7AEY%3D--c2b7958a5461253129b6d363e3d547bd44c83f9d rack.version: - 1 - 1 rack.input: !ruby/object:StringIO {} rack.errors: !ruby/object:IO {} rack.multithread: false rack.multiprocess: false rack.run_once: false rack.url_scheme: http HTTP_VERSION: HTTP/1.1 REQUEST_PATH: / action_dispatch.parameter_filter: - :password action_dispatch.secret_token: ab805f7bf1e681785a2ac4813edc43678cbe855682bc7ca9dc5f2116fc892d8ca41466f9bc261ef4ae15ad83c1c38780780d2f6bfe9c00c14abd68542a535400 action_dispatch.remote_ip: !ruby/object:ActionDispatch::RemoteIp::RemoteIpGetter check_ip_spoofing: true env: *id001 trusted_proxies: !ruby/regexp /(^127\\.0\\.0\\.1$|^(10|172\\.(1[6-9]|2[0-9]|30|31)|192\\.168)\\.)/i rack.session: !map:ActionDispatch::Session::AbstractStore::SessionHash session_id: 13deaea7bb5c7b3d02955075575d2ed0 _csrf_token: kPrhODeffhK2+IWEtRMllLrLD4Fg135I6nABBtrnjMA= rack.session.options: !map:ActionDispatch::Session::AbstractStore::OptionsHash :path: / :domain: :expire_after: :secure: false :httponly: true :id: 13deaea7bb5c7b3d02955075575d2ed0 rack.request.cookie_string: _bookcloud_session=BAh7B0kiD3Nlc3Npb25faWQGOgZFRiIlMTNkZWFlYTdiYjVjN2IzZDAyOTU1MDc1NTc1ZDJlZDBJIhBfY3NyZl90b2tlbgY7AEZJIjFrUHJoT0RlZmZoSzIrSVdFdFJNbGxMckxENEZnMTM1STZuQUJCdHJuak1BPQY7AEY%3D--c2b7958a5461253129b6d363e3d547bd44c83f9d rack.request.cookie_hash: _bookcloud_session: BAh7B0kiD3Nlc3Npb25faWQGOgZFRiIlMTNkZWFlYTdiYjVjN2IzZDAyOTU1MDc1NTc1ZDJlZDBJIhBfY3NyZl90b2tlbgY7AEZJIjFrUHJoT0RlZmZoSzIrSVdFdFJNbGxMckxENEZnMTM1STZuQUJCdHJuak1BPQY7AEY=--c2b7958a5461253129b6d363e3d547bd44c83f9d action_dispatch.cookies: !map:ActionDispatch::Cookies::CookieJar _bookcloud_session: BAh7B0kiD3Nlc3Npb25faWQGOgZFRiIlMTNkZWFlYTdiYjVjN2IzZDAyOTU1MDc1NTc1ZDJlZDBJIhBfY3NyZl90b2tlbgY7AEZJIjFrUHJoT0RlZmZoSzIrSVdFdFJNbGxMckxENEZnMTM1STZuQUJCdHJuak1BPQY7AEY=--c2b7958a5461253129b6d363e3d547bd44c83f9d action_dispatch.request.unsigned_session_cookie: session_id: 13deaea7bb5c7b3d02955075575d2ed0 _csrf_token: kPrhODeffhK2+IWEtRMllLrLD4Fg135I6nABBtrnjMA= action_dispatch.request.path_parameters: :controller: books :action: show :isbn13: \"9780425160985\" action_controller.instance: *id005 action_dispatch.request.content_type: action_dispatch.request.request_parameters: !map:ActiveSupport::HashWithIndifferentAccess {} rack.request.query_string: \"\" rack.request.query_hash: {} action_dispatch.request.query_parameters: !map:ActiveSupport::HashWithIndifferentAccess {} action_dispatch.request.parameters: &amp;id002 !map:ActiveSupport::HashWithIndifferentAccess controller: books action: show isbn13: \"9780425160985\" action_dispatch.request.formats: - !ruby/object:Mime::Type string: text/html symbol: :html synonyms: - application/xhtml+xml _headers: Content-Type: text/html _params: *id002 _request: &amp;id003 !ruby/object:ActionDispatch::Request env: *id001 filtered_parameters: controller: books action: show isbn13: \"9780425160985\" fullpath: /books/9780425160985 method: GET request_method: GET _response: !ruby/object:ActionDispatch::Response blank: false block: body: [] cache_control: {} cookie: [] etag: header: {} length: 0 request: *id003 sending_file: false status: 200 writer: !ruby/object:Proc {} _response_body: _status: 200 action_has_layout: true author: Patricia Daniels Cornwell book: !ruby/ActiveRecord:Book attributes: isbn13: \"9780425160985\" title: Hornet's Nest author: Patricia Daniels Cornwell price: created_at: &amp;id004 2011-03-03 10:41:27.757528 Z updated_at: *id004 amazon_us_price: id: 38 lookup: !ruby/object:Nokogiri::XML::Document decorators: errors: [] node_cache: - !ruby/object:Nokogiri::XML::Element {} - !ruby/object:Nokogiri::XML::Element {} - !ruby/object:Nokogiri::XML::Element {} lookup_context: !ruby/object:ActionView::LookupContext details: :handlers: - :erb - :rjs - :builder - :rhtml - :rxml :formats: - :html :locale: - :en - :en details_key: frozen_formats: false skip_default_locale: false view_paths: !seq:ActionView::PathSet - !ruby/object:ActionView::FileSystemResolver cached: {} caching: false path: /Users/nick/Dropbox/rails/bookcloud/app/views title: Hornet's Nest view_context_class: method_name: :update_prices_without_delay args: - \"9780425160985\" " /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/backend/base.rb:81:in `rescue in payload_object' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/backend/base.rb:79:in `payload_object' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/backend/base.rb:87:in `invoke_job' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:120:in `block (2 levels) in run' /Users/nick/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/timeout.rb:57:in `timeout' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:120:in `block in run' /Users/nick/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/benchmark.rb:309:in `realtime' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:119:in `run' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:177:in `reserve_and_run_one_job' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:104:in `block in work_off' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:103:in `times' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:103:in `work_off' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:78:in `block (2 levels) in start' /Users/nick/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/benchmark.rb:309:in `realtime' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:77:in `block in start' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:74:in `loop' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/worker.rb:74:in `start' /Users/nick/.rvm/gems/ruby-1.9.2-p0@rorticket/gems/delayed_job-2.1.4/lib/delayed/tasks.rb:9:in `block (2 levels) in &lt;top (required)&gt;' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:636:in `call' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:636:in `block in execute' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:631:in `each' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:631:in `execute' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:597:in `block in invoke_with_call_chain' /Users/nick/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:583:in `invoke' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2029:in `block (2 levels) in top_level' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2029:in `each' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2029:in `block in top_level' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2001:in `block in run' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/lib/rake.rb:1998:in `run' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/gems/rake-0.8.7/bin/rake:31:in `&lt;top (required)&gt;' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/bin/rake:19:in `load' /Users/nick/.rvm/gems/ruby-1.9.2-p0@global/bin/rake:19:in `&lt;main&gt;' </code></pre> <p>Any idea what may be causing the error? I have never heard of Syck before.</p>
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    1. USAndrew Grimm
    1. USNick Barrett
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    1. COHi Nick, I was wondering if the answer below actually worked for you? I'm on the same boat and have wasted hours trying to figure out what's going on to no avail so any pointers in the right direction would be much appreciated! Thanks.
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      1. USRog
    2. COIt does not work for me either, I have tried to require yaml with the 'Syck' engine in both boot.rb and application.rb but I am still experiencing the same error.
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      1. USAndrea Fiore
    3. COGuys, I am desperate here too. The answer has been marked as correct but it does not work. Any clue?
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      1. USp.matsinopoulos
 

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