Logstash error on windows7

Hello I am getting the following error
The signal HUP is in use by the JVM and will not work correctly on this platform

when executing the following logstash statement..

**C:\tools\ELK\LogStash\logstash-2.3.2\bin>**logstash -e 'input { stdin {} } output { stdout { codec => rubydebug } }'

but when I execute...

**C:\tools\ELK\LogStash\logstash-2.3.2\bin>**logstash -e 'input { stdin {} } output { stdout {} }'
io/console not supported; tty will not be manipulated
Settings: Default pipeline workers: 8
Pipeline main started
hello logstash world
2016-05-12T01:10:24.907Z D-FractalS hello logstash world

all is right with the world. My environment is as follows:
Windows 7 64bit.
logstash-2.3.2 (downloaded from elastic website).
java version 1.8.0_77-b03

Any ideas on what I may be missing? Are codecs installed separately?

Hi ,I got the same error in same condition .Did you sorted out the answer