Can't start foreman after installing smart_proxy_ansible

Problem: I installed foreman manually, to prevent everything puppet-related, as I only want to use it with ansible. After installing smart_proxy_ansible, foreman does not start anymore, but fails with this error message:

root@tmp-foreman [~/foreman]# RAILS_ENV=production bundle exec rails s
Traceback (most recent call last):
        54: from bin/rails:3:in `<main>'
        53: from bin/rails:3:in `load'
        52: from /root/foreman/bin/spring:13:in `<top (required)>'
        51: from /root/foreman/bin/spring:13:in `require'
        50: from /root/foreman/vendor/ruby/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
        49: from /root/foreman/vendor/ruby/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
        48: from /root/foreman/vendor/ruby/2.5.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
        47: from /root/foreman/vendor/ruby/2.5.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
        46: from /root/foreman/vendor/ruby/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
        45: from /root/foreman/vendor/ruby/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
        44: from /root/foreman/vendor/ruby/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
        43: from /root/foreman/bin/rails:9:in `<top (required)>'
        42: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
        41: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
        40: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
        39: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
        38: from /root/foreman/vendor/ruby/2.5.0/gems/railties-5.2.1/lib/rails/commands.rb:18:in `<top (required)>'
        37: from /root/foreman/vendor/ruby/2.5.0/gems/railties-5.2.1/lib/rails/command.rb:46:in `invoke'
        36: from /root/foreman/vendor/ruby/2.5.0/gems/railties-5.2.1/lib/rails/command/base.rb:65:in `perform'
        35: from /root/foreman/vendor/ruby/2.5.0/gems/thor-0.19.4/lib/thor.rb:369:in `dispatch'
        34: from /root/foreman/vendor/ruby/2.5.0/gems/thor-0.19.4/lib/thor/invocation.rb:126:in `invoke_command'
        33: from /root/foreman/vendor/ruby/2.5.0/gems/thor-0.19.4/lib/thor/command.rb:27:in `run'
        32: from /root/foreman/vendor/ruby/2.5.0/gems/railties-5.2.1/lib/rails/commands/server/server_command.rb:142:in `perform'
        31: from /root/foreman/vendor/ruby/2.5.0/gems/railties-5.2.1/lib/rails/commands/server/server_command.rb:142:in `tap'
        30: from /root/foreman/vendor/ruby/2.5.0/gems/railties-5.2.1/lib/rails/commands/server/server_command.rb:145:in `block in perform'
        29: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
        28: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
        27: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
        26: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
        25: from /root/foreman/config/application.rb:37:in `<top (required)>'
        24: from /usr/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler.rb:114:in `require'
        23: from /usr/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:65:in `require'
        22: from /usr/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:65:in `each'
        21: from /usr/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:76:in `block in require'
        20: from /usr/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:76:in `each'
        19: from /usr/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
        18: from /usr/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:81:in `require'
        17: from /root/foreman/vendor/ruby/2.5.0/gems/smart_proxy_ansible-2.1.0/lib/smart_proxy_ansible.rb:1:in `<top (required)>'
        16: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
        15: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
        14: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
        13: from /root/foreman/vendor/ruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
        12: from /root/foreman/vendor/ruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
        11: from /root/foreman/vendor/ruby/2.5.0/gems/smart_proxy_dynflow-0.2.2/lib/smart_proxy_dynflow.rb:2:in `<top (required)>'
        10: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
         9: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
         8: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
         7: from /root/foreman/vendor/ruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
         6: from /root/foreman/vendor/ruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
         5: from /root/foreman/vendor/ruby/2.5.0/gems/smart_proxy_dynflow-0.2.2/lib/smart_proxy_dynflow/plugin.rb:1:in `<top (required)>'
         4: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
         3: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
         2: from /root/foreman/vendor/ruby/2.5.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
         1: from /root/foreman/vendor/ruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
/root/foreman/vendor/ruby/2.5.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require': cannot load such file -- proxy/log (LoadError)

I guess there is a gem missing, but I couldn’t figure out which one.

Expected outcome: Foreman should start

Foreman and Proxy versions:

  • Foreman 1.21.0-develop
  • smart_proxy_ansible-2.1.0

I did something completely wrong, as smart_proxy_ansible is not a plugin to foreman, but for smart-proxy. I solved it by removing smart_proxy_ansible gem from the foreman installation.