Heroku在邮件/发送网格后无法安装我的应用程序。我得到的错误是：

远程：卸下链轮导轨 （3.0.4） 远程：-----

邮寄功能是在对他们的文章发表评论时向管理员发送电子邮件，并在文章发布时向“关注者”发送电子邮件。

class CommentMailer < ActionMailer::Base

def comment_created（评论，文章） @comment = 评论 @article = 文章

mail( to: @article.user.email ,
      from:'no_reply@gmail.com' ,
      subject:'A comment on your post.')

结束 结束

class ArticleMailer < ActionMailer::Base

def article_created（follower， article） @article = article follower.each do |f|邮件至：f.email，from:'no_reply@gmail.com'，主题：“已创建文章”结束结束

  <h3> Stay up tp date with my new articles </h3>
    <p> You will be sent an email whenever a new article was posted </p>
    <%= form_for @follower do |f| %>
      <%= f.label :name, "Your Name:" %>
      <%= f.text_field :name %>
    <br>
      <%= f.label :email %>
      <%= f.text_field :email %>
    <br>
      <%= f.submit('Follow me')  %>
    <% end %>

      Rails.application.configure do

  config.cache_classes = true
  config.eager_load = true
  config.consider_all_requests_local       = false
  config.action_controller.perform_caching = true
  config.serve_static_files = ENV['RAILS_SERVE_STATIC_FILES'].present?
  config.assets.js_compressor = :uglifier
  config.assets.compile = false
  config.assets.digest = true
  config.log_level = :debug
  config.i18n.fallbacks = true
  config.active_support.deprecation = :notify
  config.log_formatter = ::Logger::Formatter.new
  config.active_record.dump_schema_after_migration = false

  config.action_mailer.default_url_options = {  host: "https://personal-blog22.herokuapp.com " }
  config.action_mailer.delivery_method = :smtp

  config.action_mailer.smtp_settings = {
  :address => 'smtp.sendgrid.net',
  :port => '587',
  :domain => 'heroku.com',
  :user_name => ENV['SENDGRID_USERNAME'],
  :password => ENV['SENDGRID_PASSWORD'],
  :authentication => :plain,
  :enable_starttls_auto => true }

    # For better error to work on Vagrant VM
BetterErrors::Middleware.allow_ip! "0.0.0.0/0"

Rails.application.configure do

  config.cache_classes = false
  config.eager_load = false
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false
  config.action_mailer.raise_delivery_errors = true
config.consider_all_requests_local
  config.active_support.deprecation = :log
  config.active_record.migration_error = :page_load
  config.assets.debug = true
  config.assets.digest = true
  config.assets.raise_runtime_errors = true
  config.action_mailer.default_url_options = { :host => 'localhost:3000' }
  config.action_mailer.perform_deliveries = true
  config.action_mailer.delivery_method = :smtp
  config.action_controller.perform_caching = false
end

    require File.expand_path('../boot', __FILE__)

require 'rails/all'

Bundler.require(*Rails.groups)

module PersonalBlog
  class Application < Rails::Application

    config.active_record.raise_in_transactional_callbacks = true


    config.action_mailer.smtp_settings = {
      address:               "smtp.gmail.com",
      port:                   587,
      domain:                "ruby.blog100.com",
      user_name:             "XXXXXXgmail.com",
      password:              "XXXXX",
      authentication:        :plain,
      enable_starttls_auto:  true
    }
  end
end