App 11000 output: Error: The application encountered the following error: Could not find rake-12.3.1 in any of the sources (Bundler::GemNotFound)
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/spec_set.rb:91:in `block in materialize'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/spec_set.rb:85:in `map!'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/spec_set.rb:85:in `materialize'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/definition.rb:171:in `specs'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/definition.rb:238:in `specs_for'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/definition.rb:227:in `requested_specs'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:108:in `block in definition_method'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:20:in `setup'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler.rb:107:in `setup'
App 11000 output:     /var/lib/gems/2.3.0/gems/bundler-1.16.2/lib/bundler/setup.rb:20:in `<top (required)>'
App 11000 output:     /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
App 11000 output:     /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
App 11000 output:     /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:363:in `activate_gem'
App 11000 output:     /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:221:in `block in run_load_path_setup_code'
App 11000 output:     /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:527:in `running_bundler'
App 11000 output:     /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:220:in `run_load_path_setup_code'
App 11000 output:     /usr/share/passenger/helper-scripts/rack-preloader.rb:91:in `preload_app'
App 11000 output:     /usr/share/passenger/helper-scripts/rack-preloader.rb:189:in `block in <module:App>'
App 11000 output:     /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:380:in `run_block_and_record_step_progress'
App 11000 output:     /usr/share/passenger/helper-scripts/rack-preloader.rb:188:in `<module:App>'
App 11000 output:     /usr/share/passenger/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>'
App 11000 output:     /usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `<main>'
[ E 2018-05-24 01:27:11.0846 10979/Te age/Cor/App/Implementation.cpp:221 ]: Could not spawn process for application /home/deploy/letu_lab_web/current: The application encountered the following error: Could not find rake-12.3.1 in any of the sources (Bundler::GemNotFound)
  Error ID: 870feb42
  Error details saved to: /tmp/passenger-error-uaKtp7.html

总是说 Could not find rake-12.3.1，服务器配置如下： bundle version 1.16.2

gem version 2.7.3

ruby version 2.5.0

rails version 5.2.0

搞不清哪里有问题