Update cap, rails and ruby version

Capfile

@@ -10,7 +10,7 @@ require "capistrano/rbenv"
 require "capistrano/bundler"
 
 set :rbenv_type, :user
-set :rbenv_ruby, '2.4.0'
+set :rbenv_ruby, '2.6.4'
 set :ssh_options, {:forward_agent => true}
 # Load the SCM plugin appropriate to your project:
 #

Gemfile

@@ -25,7 +25,7 @@ gem 'rack-cors', :require => 'rack/cors'
 gem 'fast_jsonapi'
 gem 'will_paginate'
 gem 'capistrano', '3.10.1'
-gem 'capistrano-rails', '~> 1.2'
+gem 'capistrano-rails', '~> 1.4'
 gem 'capistrano-passenger', '~> 0.2.0'
 gem 'capistrano-rbenv'
 gem 'capistrano-bundler'

Gemfile.lock

@@ -214,7 +214,7 @@ DEPENDENCIES
   capistrano (= 3.10.1)
   capistrano-bundler
   capistrano-passenger (~> 0.2.0)
-  capistrano-rails (~> 1.2)
+  capistrano-rails (~> 1.4)
   capistrano-rbenv
   database_cleaner
   ed25519

log/development.log

@@ -1868,3 +1868,18 @@ DEPRECATION WARNING: Uniqueness validator will no longer enforce case sensitive
 Completed 201 Created in 224ms (Views: 0.3ms | ActiveRecord: 5.9ms | Allocations: 4114)
 
 
+Started POST "/vouchers?voucher=Lala_1&vouchee=Scootzaar" for ::1 at 2019-09-30 19:27:58 +0200
+   (0.3ms)  SET  @@SESSION.sql_mode = CONCAT(CONCAT(@@sql_mode, ',STRICT_ALL_TABLES'), ',NO_AUTO_VALUE_ON_ZERO'),  @@SESSION.sql_auto_is_null = 0, @@SESSION.wait_timeout = 2147483
+   (0.3ms)  SELECT `schema_migrations`.`version` FROM `schema_migrations` ORDER BY `schema_migrations`.`version` ASC
+Processing by VouchersController#create as HTML
+  Parameters: {"voucher"=>"Lala_1", "vouchee"=>"Scootzaar"}
+  Voucher Exists? (0.3ms)  SELECT 1 AS one FROM `vouchers` WHERE `vouchers`.`vouchee` = 'Lala_1' LIMIT 1
+  ↳ app/controllers/vouchers_controller.rb:23:in `create'
+Completed 500 Internal Server Error in 86ms (ActiveRecord: 0.8ms | Allocations: 1838)
+
+
+  
+TypeError (no implicit conversion of false into String):
+  
+app/controllers/vouchers_controller.rb:34:in `+'
+app/controllers/vouchers_controller.rb:34:in `create'