Rake abgebrochen! NoMethodError: nicht definierte Methode `[]‘ für nil: NilClass (rails5 + Heroku)

Question

Ich versuche, mein Vermögen zu kompilieren lokal, so kann ich sicherstellen, dass es keine Probleme, wenn zu Heroku schieben. Lokal sieht meine Sicht perfekt aus, aber auf Heroku werden nicht alle meine Assets geladen. Als ich RAILS_ENV=production bundle exec rake assets:precompile laufen

Ich erhalte die below Störung, irgendwelche Ideen?

rake aborted! 
NoMethodError: undefined method `[]' for nil:NilClass 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:278:in `sprockets_context' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:124:in `asset_path' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:137:in `asset_url' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_processor.rb:209:in `font_url' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/script/tree/funcall.rb:143:in `_perform' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/script/tree/node.rb:58:in `perform' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:397:in `visit_prop' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `block in visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `block in with_base' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `with_base' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:504:in `block (2 levels) in visit_directive' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:504:in `map' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:504:in `block in visit_directive' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:181:in `with_environment' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:503:in `visit_directive' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `block in visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `block in with_base' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/stack.rb:79:in `with_base' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `block in visit_children' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `map' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `visit_children' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:169:in `block in visit_children' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:181:in `with_environment' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:168:in `visit_children' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `block in visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:188:in `visit_root' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:159:in `visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:8:in `visit' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/root_node.rb:36:in `css_tree' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/tree/root_node.rb:20:in `render' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sass-3.4.22/lib/sass/engine.rb:281:in `render' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_compressor.rb:48:in `call' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/sass_compressor.rb:28:in `call' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:75:in `call_processor' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:57:in `block in call_processors' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `reverse_each' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/processor_utils.rb:56:in `call_processors' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:134:in `load_from_unloaded' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:60:in `block in load' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/loader.rb:44:in `load' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:20:in `block in initialize' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/cached_environment.rb:47:in `load' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/base.rb:66:in `find_asset' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/base.rb:73:in `find_all_linked_assets' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:142:in `block in find' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:228:in `block in stat_tree' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:212:in `block in stat_directory' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:209:in `each' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:209:in `stat_directory' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/path_utils.rb:227:in `stat_tree' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:105:in `each' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:105:in `block in logical_paths' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:104:in `each' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/legacy.rb:104:in `logical_paths' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:140:in `find' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets/manifest.rb:185:in `compile' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-rails-3.1.1/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/rake/sprocketstask.rb:147:in `with_logger' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-rails-3.1.1/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define' 
/Users/admin/.rvm/gems/ruby-2.3.1@global/gems/rake-11.2.2/exe/rake:27:in `<top (required)>' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/bin/ruby_executable_hooks:15:in `eval' 
/Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/bin/ruby_executable_hooks:15:in `<main>' 
Tasks: TOP => assets:precompile 
(See full trace by running task with --trace) 

Answer 1

gem open sprockets -v 3.7.0 und fügen Sie unter drei Linie

puts '#'*30 
puts path 
puts '#'*30 

zu /Users/admin/.rvm/gems/ruby-2.3.1@ryansportfolio/gems/sprockets-3.7.0/lib/sprockets /sass_processor.rb:124

Dann werden Sie wissen, welche Datei den Fehler führt, normalerweise, weil es eine Asset/Image-Datei fehlt oder die Funktion asset-url in css verwendet. (Asset-URL nur in SCSS)