"middleman server" error

gistfile1.txt

Error reloading Middleman: undefined method `deploy_method=' for #<Middleman::Deploy::Options:0x007fe8542a9358>
/Users/hoge/blog/webfood/config.rb:125:in `block in initialize'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-deploy-1.0.0/lib/middleman-deploy/extension.rb:16:in `registered'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/core_extensions/extensions.rb:80:in `register'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/core_extensions/extensions.rb:112:in `activate'
/Users/hoge/blog/webfood/config.rb:124:in `initialize'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/core_extensions/extensions.rb:162:in `instance_eval'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/core_extensions/extensions.rb:162:in `initialize'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/core_extensions/data.rb:33:in `initialize'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/application.rb:210:in `initialize'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/core_extensions/request.rb:56:in `new'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/core_extensions/request.rb:56:in `inst'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/preview_server.rb:132:in `new_app'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/preview_server.rb:95:in `reload'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/preview_server.rb:68:in `block in start'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/preview_server.rb:59:in `loop'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/preview_server.rb:59:in `start'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/cli/server.rb:89:in `server'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor/command.rb:27:in `run'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor.rb:359:in `dispatch'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor/base.rb:440:in `start'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/cli.rb:72:in `method_missing'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor/command.rb:29:in `run'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor/command.rb:126:in `run'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor/invocation.rb:126:in `invoke_command'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor.rb:359:in `dispatch'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/thor-0.19.1/lib/thor/base.rb:440:in `start'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/lib/middleman-core/cli.rb:20:in `start'
/Users/hoge/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/middleman-core-3.4.0/bin/middleman:18:in `<top (required)>'
/Users/hoge/.rbenv/versions/2.1.2/bin/middleman:23:in `load'
/Users/hoge/.rbenv/versions/2.1.2/bin/middleman:23:in `<main>'