Fix how configuration is fetched

config/initializers/action_mailer_smtp_settings.rb

@@ -2,7 +2,7 @@
 
 # Be sure to restart your server when you modify this file.
 
-Rails.application.config_for(:smtp).try(&:deep_symbolize_keys).try do |config|
+Rails.application.config_for(:smtp).deep_symbolize_keys.tap do |config|
   ActionMailer::Base.smtp_settings = {
     address:              config[:address],
     port:                 config[:port]&.to_i,

db/seeds.rb

@@ -10,10 +10,10 @@ country_state_names.each do |name|
   CountryState.create! name: name
 end
 
-Rails.application.config_for(:superuser).try do |config|
-  User.where(email: config['email']).first_or_create! do |new_user|
+Rails.application.config_for(:superuser).deep_symbolize_keys.tap do |config|
+  User.where(email: config[:email]).first_or_create! do |new_user|
     new_user.account = Account.create!
-    new_user.password = config['password']
+    new_user.password = config[:password]
     new_user.confirmed_at = Time.zone.now
   end.account.add_role :superuser
 end