Fixed mailer

app/controllers/application_controller.rb

@@ -138,7 +138,7 @@ class ApplicationController < LinguaFrancaApplicationController
 					request,
 					params,
 					current_user,
-				).deliver_now if Rails.env.preview? || Rails.env.production?
+				).deliver_now! if Rails.env.preview? || Rails.env.production?
 		end
 		render json: {}
 	end
@@ -193,7 +193,7 @@ class ApplicationController < LinguaFrancaApplicationController
 					request,
 					params,
 					current_user,
-				).deliver_now if Rails.env.preview? || Rails.env.production?
+				).deliver_now! if Rails.env.preview? || Rails.env.production?
 		end
 
 		# raise the error if we are in development so that we can debug it
@@ -343,7 +343,7 @@ class ApplicationController < LinguaFrancaApplicationController
 					request,
 					params,
 					current_user,
-				).deliver_now if Rails.env.preview? || Rails.env.production?
+				).deliver_now! if Rails.env.preview? || Rails.env.production?
 			logger.info "Missing translation found for: #{key}"
 		end
 	end

app/controllers/conferences_controller.rb

@@ -392,7 +392,7 @@ class ConferencesController < ApplicationController
 					@subject,
 					@content,
 					current_user,
-					@this_conference).deliver_now
+					@this_conference).deliver_now!
 			elsif params[:button] == 'preview'
 				@email_sent = :preview
 			elsif params[:button] == 'send'
@@ -1006,7 +1006,7 @@ class ConferencesController < ApplicationController
 					@subject,
 					@body,
 					current_user,
-					@this_conference).deliver_now
+					@this_conference).deliver_now!
 			end
 			return render 'conferences/register'
 		when 'locations'