資產預編譯

Question

rake aborted! 
Java::JavaLang::NullPointerException: 
    (in /home/sivamanikandan/projects/code/current/empwiz/app/assets/stylesheets/components/common/forms/elements/bootstrap-datepicker/assets/custom/less/bootstrap-datepicker.less) 
org.jruby.java.proxies.ArrayJavaProxy.to_a(org/jruby/java/proxies/ArrayJavaProxy.java:145) 
RUBY.method_missing(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/therubyrhino-2.0.4/lib/rhino/rhino_ext.rb:115) 
org.mozilla.javascript.optimizer.OptRuntime.callName(org/mozilla/javascript/optimizer/OptRuntime.java:63) 
org.mozilla.javascript.gen._home_sivamanikandan__rvm_gems_jruby_1_7_13_empwiz_gems_less_2_5_1_lib_less_js_lib_less_parser_js_2._c_anonymous_31(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/js/lib/less/parser.js:669) 
org.mozilla.javascript.gen._home_sivamanikandan__rvm_gems_jruby_1_7_13_empwiz_gems_less_2_5_1_lib_less_js_lib_less_parser_js_2._c_anonymous_31(org/mozilla/javascript/gen//home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/js/lib/less/parser.js:669) 
org.mozilla.javascript.optimizer.OptRuntime.call1(org/mozilla/javascript/optimizer/OptRuntime.java:32) 
org.mozilla.javascript.gen._home_sivamanikandan__rvm_gems_jruby_1_7_13_empwiz_gems_less_2_5_1_lib_less_js_lib_less_import_visitor_js_36._c_anonymous_4(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/js/lib/less/import-visitor.js:25) 
org.mozilla.javascript.gen._home_sivamanikandan__rvm_gems_jruby_1_7_13_empwiz_gems_less_2_5_1_lib_less_js_lib_less_import_visitor_js_36._c_anonymous_4(org/mozilla/javascript/gen//home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/js/lib/less/import-visitor.js:25) 
org.mozilla.javascript.optimizer.OptRuntime.call1(org/mozilla/javascript/optimizer/OptRuntime.java:32) 
org.mozilla.javascript.gen._home_sivamanikandan__rvm_gems_jruby_1_7_13_empwiz_gems_less_2_5_1_lib_less_js_lib_less_parser_js_2._c_anonymous_24(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/js/lib/less/parser.js:674) 
org.mozilla.javascript.gen._home_sivamanikandan__rvm_gems_jruby_1_7_13_empwiz_gems_less_2_5_1_lib_less_js_lib_less_parser_js_2._c_anonymous_24(org/mozilla/javascript/gen//home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/js/lib/less/parser.js:674) 
org.mozilla.javascript.ContextFactory.doTopCall(org/mozilla/javascript/ContextFactory.java:394) 
org.mozilla.javascript.ScriptRuntime.doTopCall(org/mozilla/javascript/ScriptRuntime.java:3091) 
java.lang.reflect.Method.invoke(java/lang/reflect/Method.java:606) 
RUBY.parse(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/parser.rb:64) 
RUBY.do_open(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/therubyrhino-2.0.4/lib/rhino/context.rb:267) 
RUBY.open(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/therubyrhino-2.0.4/lib/rhino/context.rb:252) 
RUBY.exec(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/java_script/rhino_context.rb:37) 
RUBY.exec(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/java_script.rb:26) 
RUBY.parse(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-2.5.1/lib/less/parser.rb:63) 
RUBY.evaluate(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/less-rails-2.5.0/lib/less/rails/template_handlers.rb:18) 
RUBY.render(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/tilt-1.4.1/lib/tilt/template.rb:103) 
RUBY.evaluate(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/context.rb:197) 
RUBY.evaluate(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/context.rb:194) 
org.jruby.RubyArray.each(org/jruby/RubyArray.java:1613) 
RUBY.initialize(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/processed_asset.rb:12) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:374) 
RUBY.circular_call_protection(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:395) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:373) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:94) 
RUBY.cache_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/caching.rb:58) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:93) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:287) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:61) 
RUBY.resolve_dependencies(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/processed_asset.rb:111) 
RUBY.resolve_dependencies(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/processed_asset.rb:105) 
org.jruby.RubyArray.each(org/jruby/RubyArray.java:1613) 
RUBY.build_required_assets(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/processed_asset.rb:97) 
RUBY.initialize(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/processed_asset.rb:16) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:374) 
RUBY.circular_call_protection(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:395) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:373) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:94) 
RUBY.cache_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/caching.rb:58) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:93) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:287) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:61) 
RUBY.initialize(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/bundled_asset.rb:16) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:377) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:94) 
RUBY.cache_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/caching.rb:58) 
RUBY.build_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:93) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/base.rb:287) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/index.rb:61) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:211) 
RUBY.benchmark(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:257) 
RUBY.find_asset(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:210) 
RUBY.compile(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:119) 
RUBY.compile(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:118) 
org.jruby.RubyArray.each(org/jruby/RubyArray.java:1613) 
RUBY.define(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-rails-2.1.3/lib/sprockets/rails/task.rb:61) 
RUBY.with_logger(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-2.11.0/lib/rake/sprocketstask.rb:146) 
RUBY.define(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/sprockets-rails-2.1.3/lib/sprockets/rails/task.rb:60) 
RUBY.execute(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:240) 
org.jruby.RubyProc.call(org/jruby/RubyProc.java:271) 
RUBY.execute(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:235) 
org.jruby.RubyArray.each(org/jruby/RubyArray.java:1613) 
RUBY.invoke_with_call_chain(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:179) 
RUBY.mon_synchronize(/home/sivamanikandan/.rvm/rubies/jruby-1.7.13/lib/ruby/1.9/monitor.rb:211) 
RUBY.invoke_with_call_chain(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:172) 
RUBY.invoke(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:165) 
RUBY.before(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/bower-rails-0.8.3/lib/tasks/helpers/before_hook.rb:16) 
RUBY.execute(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:240) 
org.jruby.RubyProc.call(org/jruby/RubyProc.java:271) 
RUBY.execute(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:235) 
org.jruby.RubyArray.each(org/jruby/RubyArray.java:1613) 
RUBY.invoke_with_call_chain(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:179) 
RUBY.mon_synchronize(/home/sivamanikandan/.rvm/rubies/jruby-1.7.13/lib/ruby/1.9/monitor.rb:211) 
RUBY.invoke_with_call_chain(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:172) 
RUBY.invoke(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/task.rb:165) 
RUBY.invoke_task(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:150) 
RUBY.top_level(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:106) 
RUBY.top_level(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:106) 
org.jruby.RubyArray.each(org/jruby/RubyArray.java:1613) 
RUBY.run_with_threads(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:115) 
RUBY.top_level(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:100) 
RUBY.run(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:78) 
RUBY.standard_exception_handling(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:176) 
RUBY.run(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/gems/rake-10.3.2/lib/rake/application.rb:75) 
org.jruby.RubyKernel.load(org/jruby/RubyKernel.java:1081) 
org.jruby.RubyKernel.eval(org/jruby/RubyKernel.java:1101) 
RUBY.(root)(/home/sivamanikandan/.rvm/gems/jruby-1.7.13@empwiz/bin/jruby_executable_hooks:15) 
Tasks: TOP => assets:precompile 
(See full trace by running task with --trace) 

Answer 1

，這似乎是在JRuby的Java集成的錯誤......請嘗試更新到JRuby的1.7.16