Bring find_by back

Author: momo3404

app/controllers/api/v2/plans_controller.rb

@@ -10,7 +10,7 @@ class PlansController < BaseApiController # rubocop:todo Style/Documentation
       def show
         raise Pundit::NotAuthorizedError unless @scopes.include?('read')
 
-        @plan = Plan.includes(roles: :user).find(params[:id])
+        @plan = Plan.includes(roles: :user).find_by(id: params[:id])
 
         raise Pundit::NotAuthorizedError unless @plan.present?