remored the trailling put and the format validation

app/controllers/forms_controller.rb

@@ -34,7 +34,6 @@ class FormsController < ApplicationController
   end
 
   def notification
-    puts ''
     @form = current_user.forms.find_by!(token: params[:id])
   end
 

app/models/form.rb

@@ -18,7 +18,7 @@ class Form < ApplicationRecord
   validates :airtable_api_key, presence: { if: :airtable? }
   validates :airtable_app_key, presence: { if: :airtable? }
   validates :airtable_table, presence: { if: :airtable? }
-  validates :notify_email, format: { with: /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i, on: :update }
+  validates :notify_email, presence: true, on: :update
   # TODO: use counter_cache option on association
   def submissions_count
     @submissions_count ||= submissions.count