title: Filter chain halted as :validate_sign_up_params rendered or redirected - devise_token_auth
body: <p>I'm working on a ruby on rails API using <strong><a href="https://github.com/lynndylanhurley/devise_token_auth#mounting-routes" rel="nofollow">devise_token_auth</a></strong> as authentication , and i'm getting this error everytime i'm making a API call from <strong><em>postman google chrom</em></strong> extension .below are my settings</p>
  
  <p>Gemfile</p>
  
  <pre><code>gem 'devise'
  gem 'omniauth'
  gem 'devise_token_auth'
  gem 'byebug'
  gem 'rack-cors', :require =&gt; 'rack/cors'
  </code></pre>
  
  <p>routes.rb</p>
  
  <pre><code>mount_devise_token_auth_for 'User', at: 'auth'
  </code></pre>
  
  <p><strong>application_controller.rb</strong></p>
  
  <pre><code> include DeviseTokenAuth::Concerns::SetUserByToken
      before_action :authenticate_user! , :except=&gt;[:new, :create]
  </code></pre>
  
  <p><strong>User model:</strong></p>
  
  <pre><code>  devise :database_authenticatable, :registerable,
            :recoverable, :rememberable, :trackable, :validatable,
            :confirmable, :omniauthable
    include DeviseTokenAuth::Concerns::User
  
    after_initialize :set_provider #, :set_uid
  
  def set_provider
      byebug
   self[:provider] = "email" if self[:provider].blank?
  
  end
  
  
  def set_uid
    byebug
    self[:uid] = self[:email] if self[:uid].blank? &amp;&amp; self[:email].present?
  end 
  </code></pre>
  
  <p>and i'm a little worried that why these <code>byebug</code> in the <code>User Model</code> are not working ! which ,because i think that it's not coming to model user</p>