# Logstash showing error when executed from python but executes from terminal **URL:** \ **Category:** Logstash\ **Created:** [August 5, 2022, 11:05am UTC](https://discuss.elastic.co/t/logstash-showing-error-when-executed-from-python-but-executes-from-terminal/311508 "2022-08-05T11:05:50Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Morning\_Star](https://avatars.discourse-cdn.com/v4/letter/m/b9bd4f/32.png) [@Morning\_Star](https://discuss.elastic.co/u/Morning_Star)\ **Post date:** [August 5, 2022, 11:05am UTC](https://discuss.elastic.co/t/logstash-showing-error-when-executed-from-python-but-executes-from-terminal/311508/1 "2022-08-05T11:05:50Z")
I'm new to ELK stack and any help would be appriciated I have tried both os and subprocess both are giving same error This is getting executed from terminal ` > /usr/share/logstash/bin/logstash -f /root/folder1/folder2/demo.conf ` but the Python code: > `os.system("/usr/share/logstash/bin/logstash -f /root/folder1/folder2/demo.conf")` similar thing was working on my windows machine but on server it's giving error Can see the error output below: > [ERROR] 2022-08-05 10:43:45.366 [Ruby-0-Thread-13: :1] javapipeline - Worker loop initialization error {:pipeline\_id=\>"main", :error=\>"Missing Filter End Vertex", :exception=\>Java::JavaLang::IllegalStateException, :stacktrace=\>"org.logstash.config.ir.CompiledPipeline$CompiledExecution.lambda$compileFilters$1(org/logstash/config/ir/CompiledPipeline.java:384)\njava.util.Optional.orElseThrow(java/util/Optional.java:408)\norg.logstash.config.ir.CompiledPipeline$CompiledExecution.compileFilters(org/logstash/config/ir/CompiledPipeline.java:384)\norg.logstash.config.ir.CompiledPipeline$CompiledExecution.(org/logstash/config/ir/CompiledPipeline.java:363)\norg.logstash.config.ir.CompiledPipeline$CompiledUnorderedExecution.(org/logstash/config/ir/CompiledPipeline.java:322)\norg.logstash.config.ir.CompiledPipeline.buildExecution(org/logstash/config/ir/CompiledPipeline.java:154)\norg.logstash.execution.WorkerLoop.(org/logstash/execution/WorkerLoop.java:67)\njdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)\njdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(jdk/internal/reflect/NativeConstructorAccessorImpl.java:62)\njdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(jdk/internal/reflect/DelegatingConstructorAccessorImpl.java:45)\njava.lang.reflect.Constructor.newInstance(java/lang/reflect/Constructor.java:490)\norg.jruby.javasupport.JavaConstructor.newInstanceDirect(org/jruby/javasupport/JavaConstructor.java:253)\norg.jruby.RubyClass.newInstance(org/jruby/RubyClass.java:939)\norg.jruby.RubyClass$INVOKER$i$newInstance.call(org/jruby/RubyClass$INVOKER$i$newInstance.gen)\nRUBY.init\_worker\_loop(/usr/share/logstash/logstash-core/lib/logstash/java\_pipeline.rb:578)\nusr.share.logstash.logstash\_minus\_core.lib.logstash.java\_pipeline.start\_workers(/usr/share/logstash/logstash-core/lib/logstash/java\_pipeline.rb:285)\norg.jruby.RubyProc.call(org/jruby/RubyProc.java:318)\njava.lang.Thread.run(java/lang/Thread.java:829)", :thread=\>"#\"} ---
**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\ **Post date:** [August 5, 2022, 2:36pm UTC](https://discuss.elastic.co/t/logstash-showing-error-when-executed-from-python-but-executes-from-terminal/311508/2 "2022-08-05T14:36:45Z")
> [@Morning\_Star](#): > > /root/folder1/folder2/demo.conf What does that file look like on the server that is producing that error? ---
**Author:** ![Morning\_Star](https://avatars.discourse-cdn.com/v4/letter/m/b9bd4f/32.png) [@Morning\_Star](https://discuss.elastic.co/u/Morning_Star)\ **Post date:** [August 5, 2022, 5:30pm UTC](https://discuss.elastic.co/t/logstash-showing-error-when-executed-from-python-but-executes-from-terminal/311508/3 "2022-08-05T17:30:45Z")
Here is the demo.conf file. Can there be an issue with access to this file or unable to read from this file? ```auto input { file { path => "path/demo.json" mode => "read" file_completed_action => 'log' file_completed_log_path => 'path/writen_files.log' exit_after_read => 'true' sincedb_path => "/dev/null" exclude => "*.gz" } } filter { json { source => "message" } mutate { remove_field => ["host","path","@version","message"] } } output { elasticsearch { codec => json hosts => ["http://host:9200/"] index => "req_idx" } stdout {} } ``` ---
**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\ **Post date:** [August 5, 2022, 7:21pm UTC](https://discuss.elastic.co/t/logstash-showing-error-when-executed-from-python-but-executes-from-terminal/311508/4 "2022-08-05T19:21:31Z")
> [@Morning\_Star](#): > > Can there be an issue with access to this file or unable to read from this file? Neither of those problems would cause that message. Not sure what is wrong. ---
**Author:** ![Morning\_Star](https://avatars.discourse-cdn.com/v4/letter/m/b9bd4f/32.png) [@Morning\_Star](https://discuss.elastic.co/u/Morning_Star)\ **Post date:** [August 6, 2022, 6:15am UTC](https://discuss.elastic.co/t/logstash-showing-error-when-executed-from-python-but-executes-from-terminal/311508/5 "2022-08-06T06:15:49Z")
Executing it from a different script fixed it. (External python file) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 3, 2022, 6:16am UTC](https://discuss.elastic.co/t/logstash-showing-error-when-executed-from-python-but-executes-from-terminal/311508/6 "2022-09-03T06:16:23Z")
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