send email error

config/application.rb

@@ -10,7 +10,6 @@ module SampleApp
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
     config.load_defaults 6.1
-    config.assets.initialize_on_precompile = false
 
     # Configuration for the application, engines, and railties goes here.
     #

config/environments/development.rb

@@ -33,15 +33,11 @@ Rails.application.configure do
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :local
 
+  config.action_mailer.perform_deliveries = true
+
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = true
-
-  # Action Mailer
-  config.action_mailer.default_url_options = { host: 'localhost:3000' } # for absolute urls in email
-  config.action_mailer.asset_host = "http://localhost:3000" # for image URLs in HTML email
-
-  # Allow generating absolute urls with routing url helpers.
-  Rails.application.routes.default_url_options[:host] = 'localhost:3000'
+  config.action_mailer.default_url_options = { host: "localhost:3000" , protocol: "http"} 
   # Use this if developing on localhost.
   # config.action_mailer.default_url_options = { host: host, protocol: 'http' }
 

config/environments/production.rb

@@ -6,16 +6,12 @@ Rails.application.configure do
   # Code is not reloaded between requests.
   config.cache_classes = true
 
-  config.action_mailer.perform_deliveries = true
-
-  config.action_mailer.raise_delivery_errors = true
-
   config.action_mailer.delivery_method = :smtp
   config.action_mailer.default_url_options = { host: "fathomless-garden-95089.herokuapp.com" , protocol: "https"} 
   config.action_mailer.smtp_settings = {
     address:              'smtp.gmail.com',
     port:                 587,
-    domain:               'fathomless-garden-95089.herokuapp.com',
+    domain:               'heroku.com',
     user_name:            Rails.application.credentials.dig(:google_smtp, :email),
     password:             Rails.application.credentials.dig(:google_smtp, :password),
     authentication:       'plain',