Rails 5 ajax上传文件与remotipart不起作用(发送为HTML而不是JS)

我加：

gem 'remotipart','~> 1.3.1'

和

//= require jquery.remotipart

我有以下表格：

= simple_form_for state,remote: true do |f|
  = f.input :wsr

该表单的输出：

<form class="simple_form" novalidate="novalidate" id="edit_odc_state_73" enctype="multipart/form-data" action="/odc_states/73" accept-charset="UTF-8" data-remote="true" method="post">

但是当我提交表格时：

Started PATCH "/odc_states/73" for 127.0.0.1 at 2016-12-29 16:02:56 +0700
Processing by OdcStatesController#update as HTML
  Parameters: {"utf8"=>"?","odc_state"=>{"wsr"=>#<ActionDispatch::Http::UploadedFile:0x007f67ba393338 @tempfile=#<Tempfile:/tmp/RackMultipart20161229-10725-1r3sn5z.txt>,@original_filename="test1.txt",@content_type="text/plain",@headers="Content-Disposition: form-data; name="odc_state[wsr]"; filename="test1.txt"rnContent-Type: text/plainrn">},"id"=>"73"}
Can't verify CSRF token authenticity.
Completed 422 Unprocessable Entity in 1ms (ActiveRecord: 0.0ms)

ActionController::InvalidAuthenticityToken (ActionController::InvalidAuthenticityToken):

为什么要以HTML格式发送任何想法？