Ruby on rails 未初始化常量设计（NameError）unicorn

我用capistrano将rails应用程序部署到digitalocean，在添加了新的gem

gem'designe\u token\u auth'，1.0.0'

后，我在unicorn日志中遇到了奇怪的问题。是贝娄

E[2019-05-09T17:49:37.285001#19550]错误--：未初始化的常数设计（NameError）
/home/deploy/www/smole-app-back/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.2/lib/bootsnap/load\u-path\u-cache/core\u ext/active\u-support.rb:79:“加载块中缺少常量”
/home/deploy/www/smole app back/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.2/lib/bootsnap/load_path_cache/core_ext/active_support.rb:8:in'without_bootsnap_cache'
/home/deploy/www/smole-app-back/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.2/lib/bootsnap/load\u-path\u-cache/core\u ext/active\u-support.rb:79:“加载时救援\u丢失\u常量”
/home/deploy/www/smole-app-back/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.2/lib/bootsnap/load\u path\u cache/core\u ext/active\u support.rb:58:'load\u missing\u constant'中
/home/deploy/www/smole-app-back/releases/20190509174241/config/initializers/designe.rb:1:in`'
/home/deploy/www/smole-app-back/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.2/lib/bootsnap/load\u path\u cache/core\u ext/kernel\u require.rb:54:in'load'
/home/deploy/www/smole-app-back/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.2/lib/bootsnap/load\u path\u cache/core\u ext/kernel\u require.rb:54:in'load'
/home/deploy/www/smole-app-back/shared/bundle/ruby/2.5.0/gems/railties-