Fix bug.

app/controllers/admin/ruling_timers_controller.rb

@@ -47,7 +47,7 @@ class Admin::RulingTimersController < OrbitMemberController
 	end
 	def timer_management
 		@timer_temps = RulingTimerTemp.all.page(params[:page]).per(15)
-		@active_users = @timer_temps.map{|t| t.user}
+		@active_users = @timer_temps.map{|t| t.user}.compact
 	end
 	def task_management
 		@tasks = RulingTimerTask.all.desc(:created_at).page(params[:page]).per(10)

config/routes.rb

@@ -51,6 +51,11 @@ Rails.application.routes.draw do
 			category.title_translations = I18n.available_locales.map{|l| [l.to_s,I18n.with_locale(l){I18n.t("ruling_timer.personal_project")}]}.to_h
 			category.save
 		end
+		RulingTimerTemp.all.to_a.each do |t|
+			if t.user.nil?
+				t.destroy
+			end
+		end
 	rescue => e
 		puts e.to_s
 	end