Logstash version 6.6.1
Operating system : windows 10
conf file : input { generator {} } filter { sleep { time => 1 } } output { stdout { codec => json } }
pipelines.yml :  pipeline.id: main
ERROR Message
] Executing action {:action=>LogStash::PipelineAction::Create/pipeline_id:main}
[2019-03-07T16:59:34,080][ERROR][logstash.agent           ] Failed to execute action {:action=>LogStash::PipelineAction::Create/pipeline_id:main, :exception=>"LogStash::ConfigurationError", :message=>"Expected one of #, input, filter, output at line 3, column 1 (byte 76) after ", :backtrace=>["E:/logstash-6.6.1/logstash-core/lib/logstash/compiler.rb:41:in compile_imperative'", "E:/logstash-6.6.1/logstash-core/lib/logstash/compiler.rb:49:incompile_graph'", "E:/logstash-6.6.1/logstash-core/lib/logstash/compiler.rb:11:in block in compile_sources'", "org/jruby/RubyArray.java:2486:inmap'", "E:/logstash-6.6.1/logstash-core/lib/logstash/compiler.rb:10:in compile_sources'", "org/logstash/execution/AbstractPipelineExt.java:149:ininitialize'", "E:/logstash-6.6.1/logstash-core/lib/logstash/pipeline.rb:22:in initialize'", "E:/logstash-6.6.1/logstash-core/lib/logstash/pipeline.rb:90:ininitialize'", "E:/logstash-6.6.1/logstash-core/lib/logstash/pipeline_action/create.rb:43:in block in execute'", "E:/logstash-6.6.1/logstash-core/lib/logstash/agent.rb:94:inblock in exclusive'", "org/jruby/ext/thread/Mutex.java:148:in synchronize'", "E:/logstash-6.6.1/logstash-core/lib/logstash/agent.rb:94:inexclusive'", "E:/logstash-6.6.1/logstash-core/lib/logstash/pipeline_action/create.rb:39:in execute'", "E:/logstash-6.6.1/logstash-core/lib/logstash/agent.rb:327:inblock in converge_state'"]}
When I run conf file with "-f " parameter it runs without problem. But without parameter when I add it on pipeline, I got the error shown above.