error

undefined method `each' for "RawBlameHistory":String

Extracted source (around line #150):
                
        def resolve_all
          config = configurations.dup
          config.each do |key, value|
            config[key] = resolve(value) if value
          end
          config

full_trace

Rails.root: /Users/Ivan/projects/ticketee

Application Trace | Framework Trace | Full Trace
activerecord (4.2.0) lib/active_record/connection_adapters/connection_specification.rb:150:in `resolve_all'
activerecord (4.2.0) lib/active_record/connection_handling.rb:69:in `resolve'
activerecord (4.2.0) lib/active_record/core.rb:46:in `configurations='
activerecord (4.2.0) lib/active_record/railtie.rb:117:in `block (2 levels) in <class:Railtie>'
activesupport (4.2.0) lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
activesupport (4.2.0) lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
activesupport (4.2.0) lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks'
activesupport (4.2.0) lib/active_support/lazy_load_hooks.rb:44:in `each'
activesupport (4.2.0) lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks'
activerecord (4.2.0) lib/active_record/base.rb:316:in `<module:ActiveRecord>'
activerecord (4.2.0) lib/active_record/base.rb:26:in `<top (required)>'
activerecord (4.2.0) lib/active_record/migration.rb:384:in `connection'
activerecord (4.2.0) lib/active_record/migration.rb:371:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `_run_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_call_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
web-console (2.0.0) lib/action_dispatch/debug_exceptions.rb:18:in `middleware_call'
web-console (2.0.0) lib/action_dispatch/debug_exceptions.rb:13:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.0) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.0) lib/rack/runtime.rb:18:in `call'
activesupport (4.2.0) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.0) lib/rack/lock.rb:17:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/static.rb:113:in `call'
rack (1.6.0) lib/rack/sendfile.rb:113:in `call'
railties (4.2.0) lib/rails/engine.rb:518:in `call'
railties (4.2.0) lib/rails/application.rb:164:in `call'
rack (1.6.0) lib/rack/lock.rb:17:in `call'
rack (1.6.0) lib/rack/content_length.rb:15:in `call'
rack (1.6.0) lib/rack/handler/webrick.rb:89:in `service'
/Users/Ivan/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
/Users/Ivan/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
/Users/Ivan/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'