The problem of sending messages through mailer, and how to solve?

Did the sending of a message with the form mailer, form is static on each page of the application when sent from the home page: localhost:3000/#modal, everything works fine, but when I turn on any post, when sending messages of a route:

This error occurs with data by:
localhost:3000/posts/34#modal
Here is the routes:
get 'sends/index'
get 'zams/index'
Controller:

Mailer himself: