ArgumentError in Rails::MailersController#preview

rails

What's the error ?

I guessed that simply Mailers controller has not argument

 

As follow sentence is appeared

 

wrong number of arguments (given 0, expected 1)

 

From <https://start-cloned-cloned-taigawatanabe.c9users.io/rails/mailers/user_mailer/account_activation>

 

I thought that given0 means in other words argument had not contain in the controllers

So I should have done a value into the database and might be function I don't know

Let's try it since now

 

 

1.check my environment of log and also console

 

 

-c .0.1, ENG 18:55 taiqawatanabe start-cloned-cloned x https:// ide.c9.io/taigawatanabe/start-cloned-cloned Cloud9 File Edit Find config environments initializers locales plication. rb boot.rb cable.yml credentials.yml.enc database.yml environment.rb master.key puma.rb routes.rb spring. rb storage.yml Mew Goto Run Tools WI ndow Support puma - "taigawat Preview O Run Share 8 z o routes_rb [B] https://start-cl x user.rb user mailer.rb MEMORY development log xo 103 16764 16765 16766 16767 16768 16769 16770 16771 16772 16773 16774 16775 16776 16777 16778 16779 16780 16781 16782 16783 16784 16785 16786 16787 16788 16789 16790 16791 Rendered /usr/10ca1/rvm/gems/ruby-2.4.0/gems/rai1ties-5.2.3/1ib/rai1s/temp1ates/rai1s/mai1ers/mai1er.htm1 .erb v Completed 200 OK in 5ms (Views: 4.3ms I ActiveRecord: e.øms) Started GET " /rails/mailers/user mailer/account activation" for 114. Cannot render console from 114.178.131.130! Allowed networks: 127 processing by Rails: as HTML Parameters: mailer/account activation"} UserMai1er#account activation: processed outbound mail in 0.4ms Completed 500 Internal Server Error in 18ms (ActiveRecord: 0.0ms) ArgumentError (wrong number of arguments (given 0, expected 1)) : app/mailers/user mailer.rb:5:in -account activation started GET "/" for 114.178.131.130 at 2019-04-27 09:53: 20 +oeee Cannot render console from 114.178.131.130! Allowed networks: 127.0 178.131.130 at 2019-04-27 +eeøø . .0.1, processing by Staticpagescontroller#home as HTML Rendering static pages/home.html.erb within layouts/application Rendered static pages/home . html .erb within layouts/ application (2. Ims) Rendered layouts/ rails default. html. erb (95.6ms) Rendered layouts/ header. html. erb (1.2ms) Rendered layouts/ footer. html. erb (0.5ms) Completed 200 OK in 106ms (Views: 104.7ms I ActiveRecord: 0. Oms) 127.e.e.0/127.255.255.255 127.e.e.0/127.255.255.255 db migrate 20190421090813 20190422151022 20190422151205 20190424050137 20190426052414 schema.rb seeds.rb development.log test. log public storage controllers create users.rb add index to users email.rb _add_password_digest_to_users.rb _add_remember_digest_to_users.rb add activation to users.rb account activations controller test.rb (682 Bytes) 16788:s5 Text Spaces: 2 2019/04/27

 

How to solve the problem ?

 

 

What is the meaning ?

 

https://docs.ruby-lang.org/ja/latest/class/ArgumentError.html

 

Result

 

https://qiita.com/tmiyachi_teen-spirit/items/82417ab6126d816af4e4