我在使用 Ubuntu + Apache +Passenger 时遇到此错误。问题是我没有使用任何数据库或模型。
undefined method `has_one_attached' for #<Class:0x0000555c6ad94fd8> (NoMethodError)
/usr/local/rvm/gems/ruby-2.5.1/gems/activerecord-5.2.1/lib/active_record/dynamic_matchers.rb:22:in `method_missing'
/usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob/representable.rb:7:in `block in <module:Representable>'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/concern.rb:122:in `class_eval'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/concern.rb:122:in `append_features'
/usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob.rb:23:in `include'
/usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob.rb:23:in `<class:Blob>'
/usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob.rb:16:in `<main>'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:374:in `block in require_or_load'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:37:in `block in load_interlock'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies/interlock.rb:14:in `block in loading'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/concurrency/share_lock.rb:151:in `exclusive'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies/interlock.rb:13:in `loading'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:37:in `load_interlock'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:352:in `require_or_load'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:48:in `block in require_or_load'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:16:in `allow_bootsnap_retry'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:47:in `require_or_load'
/usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:330:in `depend_on'
/usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:82:in `depend_on' …