Error after give permission: undefined method `synchronize' for nil:NilClass

[nonato]

I'm using koala version 2.3.0 + omniauth-facebook 3.0.0

I'm trying to do this:
user_facebook_api = Koala::Facebook::API.new(user_facebook_token)
user_facebook_api.get_object("me")

When I try in the console, it returns my profile correctly.

But on the server, it returns this
*.
* NoMethodError Exception: undefined method `synchronize' for nil:NilClass
.

what is wrong?

Already, thanks

Full Trace of Server
/home/nonato/.rvm/rubies/ruby-2.0.0-p643/lib/ruby/2.0.0/singleton.rb:139:in instance' multi_json (1.11.2) lib/multi_json/adapter.rb:21:inload'
multi_json (1.11.2) lib/multi_json.rb:119:in load' koala (2.3.0) lib/koala/api.rb:89:inapi'
koala (2.3.0) lib/koala/api/graph_api.rb:527:in graph_call' koala (2.3.0) lib/koala/api/graph_api.rb:116:inget_connection'
app/controllers/facebook_integrations_controller.rb:85:in load_facebook_pages' activesupport (3.2.18) lib/active_support/callbacks.rb:484:in_run__122422330__process_action__648999105__callbacks'
activesupport (3.2.18) lib/active_support/callbacks.rb:405:in __run_callback' activesupport (3.2.18) lib/active_support/callbacks.rb:385:in_run_process_action_callbacks'
activesupport (3.2.18) lib/active_support/callbacks.rb:81:in run_callbacks' actionpack (3.2.18) lib/abstract_controller/callbacks.rb:17:inprocess_action'
actionpack (3.2.18) lib/action_controller/metal/rescue.rb:29:in process_action' actionpack (3.2.18) lib/action_controller/metal/instrumentation.rb:30:inblock in process_action'
activesupport (3.2.18) lib/active_support/notifications.rb:123:in block in instrument' activesupport (3.2.18) lib/active_support/notifications/instrumenter.rb:20:ininstrument'
activesupport (3.2.18) lib/active_support/notifications.rb:123:in instrument' actionpack (3.2.18) lib/action_controller/metal/instrumentation.rb:29:inprocess_action'
actionpack (3.2.18) lib/action_controller/metal/params_wrapper.rb:207:in process_action' activerecord (3.2.18) lib/active_record/railties/controller_runtime.rb:18:inprocess_action'
actionpack (3.2.18) lib/abstract_controller/base.rb:121:in process' actionpack (3.2.18) lib/abstract_controller/rendering.rb:45:inprocess'
actionpack (3.2.18) lib/action_controller/metal.rb:203:in dispatch' actionpack (3.2.18) lib/action_controller/metal/rack_delegation.rb:14:indispatch'
actionpack (3.2.18) lib/action_controller/metal.rb:246:in block in action' actionpack (3.2.18) lib/action_dispatch/routing/route_set.rb:73:incall'
actionpack (3.2.18) lib/action_dispatch/routing/route_set.rb:73:in dispatch' actionpack (3.2.18) lib/action_dispatch/routing/route_set.rb:36:incall'
journey (1.0.4) lib/journey/router.rb:68:in block in call' journey (1.0.4) lib/journey/router.rb:56:ineach'
journey (1.0.4) lib/journey/router.rb:56:in call' actionpack (3.2.18) lib/action_dispatch/routing/route_set.rb:608:incall'
omniauth (1.3.1) lib/omniauth/strategy.rb:186:in call!' omniauth (1.3.1) lib/omniauth/strategy.rb:164:incall'
omniauth (1.3.1) lib/omniauth/builder.rb:63:in call' exception_notification (4.1.1) lib/exception_notification/rack.rb:32:incall'
actionpack (3.2.18) lib/action_dispatch/middleware/best_standards_support.rb:17:in call' rack (1.4.7) lib/rack/etag.rb:23:incall'
rack (1.4.7) lib/rack/conditionalget.rb:25:in call' actionpack (3.2.18) lib/action_dispatch/middleware/head.rb:14:incall'
actionpack (3.2.18) lib/action_dispatch/middleware/params_parser.rb:21:in call' actionpack (3.2.18) lib/action_dispatch/middleware/flash.rb:242:incall'
rack (1.4.7) lib/rack/session/abstract/id.rb:210:in context' rack (1.4.7) lib/rack/session/abstract/id.rb:205:incall'
actionpack (3.2.18) lib/action_dispatch/middleware/cookies.rb:341:in call' activerecord (3.2.18) lib/active_record/query_cache.rb:64:incall'
activerecord (3.2.18) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in call' actionpack (3.2.18) lib/action_dispatch/middleware/callbacks.rb:28:inblock in call'
activesupport (3.2.18) lib/active_support/callbacks.rb:405:in _run__746720319__call__895200674__callbacks' activesupport (3.2.18) lib/active_support/callbacks.rb:405:in__run_callback'
activesupport (3.2.18) lib/active_support/callbacks.rb:385:in _run_call_callbacks' activesupport (3.2.18) lib/active_support/callbacks.rb:81:inrun_callbacks'
actionpack (3.2.18) lib/action_dispatch/middleware/callbacks.rb:27:in call' actionpack (3.2.18) lib/action_dispatch/middleware/reloader.rb:65:incall'
actionpack (3.2.18) lib/action_dispatch/middleware/remote_ip.rb:31:in call' actionpack (3.2.18) lib/action_dispatch/middleware/debug_exceptions.rb:16:incall'
actionpack (3.2.18) lib/action_dispatch/middleware/show_exceptions.rb:56:in call' railties (3.2.18) lib/rails/rack/logger.rb:32:incall_app'
railties (3.2.18) lib/rails/rack/logger.rb:16:in block in call' activesupport (3.2.18) lib/active_support/tagged_logging.rb:22:intagged'
railties (3.2.18) lib/rails/rack/logger.rb:16:in call' request_store (1.2.0) lib/request_store/middleware.rb:8:incall'
actionpack (3.2.18) lib/action_dispatch/middleware/request_id.rb:22:in call' rack (1.4.7) lib/rack/methodoverride.rb:21:incall'
rack (1.4.7) lib/rack/runtime.rb:17:in call' activesupport (3.2.18) lib/active_support/cache/strategy/local_cache.rb:72:incall'
rack (1.4.7) lib/rack/lock.rb:15:in call' actionpack (3.2.18) lib/action_dispatch/middleware/static.rb:63:incall'
rack-cache (1.2) lib/rack/cache/context.rb:136:in forward' rack-cache (1.2) lib/rack/cache/context.rb:245:infetch'
rack-cache (1.2) lib/rack/cache/context.rb:185:in lookup' rack-cache (1.2) lib/rack/cache/context.rb:66:incall!'
rack-cache (1.2) lib/rack/cache/context.rb:51:in call' railties (3.2.18) lib/rails/engine.rb:484:incall'
railties (3.2.18) lib/rails/application.rb:231:in call' rack (1.4.7) lib/rack/content_length.rb:14:incall'
railties (3.2.18) lib/rails/rack/log_tailer.rb:17:in call' rack (1.4.7) lib/rack/handler/webrick.rb:59:inservice'
webrick (1.3.1) lib/webrick/httpserver.rb:138:in service' webrick (1.3.1) lib/webrick/httpserver.rb:94:inrun'
webrick (1.3.1) lib/webrick/server.rb:191:in `block in start_thread'

[arsduo]

Weird, that's very strange. Can you try upgrading to Koala 2.5.0rc1? That removes the dependency on MultiJson entirely.

[nonato]

Hello. thanks for response., I will try that and I will post the result.
thanks

[arsduo]

Closing since it's been 7 months — let me know if you're still seeing issues.