Logstash not performing task - elasticsearch

Question

I want some data in a postgresql database to be indexed to an elasticsearch index. To do so I decided to use Logstash.
I installed Logstash and JDBC.
I perform the following config:
jdbc {
jdbc_connection_string => "jdbc:postgresql://localhost:5432/product_data"
jdbc_user => "postgres"
jdbc_password => "<my_password>"
jdbc_driver_class => "org.postgresql.Driver"
schedule => "* * * * *" # cronjob schedule format (see "Helpful Links")
statement => "SELECT * FROM public.vendor_product" # the PG command for retrieving the documents IMPORTANT: no semicolon!
jdbc_paging_enabled => "true"
jdbc_page_size => "300"
}
}
output {
# used to output the values in the terminal (DEBUGGING)
# once everything is working, comment out this line
stdout { codec => "json" }
# used to output the values into elasticsearch
elasticsearch {
hosts => ["localhost:9200"]
index => "vendorproduct"
document_id => "document_%id"
doc_as_upsert => true # upserts documents (e.g. if the document does not exist, creates a new record)
}
}
As a test I sheduled this every minute. To run my test I did:
logstash.bat -f logstash_postgre_ES.conf --debug
On my console I get:
...
[2022-04-04T16:10:07,065][DEBUG][logstash.agent ] Starting puma
[2022-04-04T16:10:07,081][DEBUG][logstash.agent ] Trying to start WebServer {:port=>9600}
[2022-04-04T16:10:07,190][DEBUG][logstash.api.service ] [api-service] start
[2022-04-04T16:10:07,834][INFO ][logstash.agent ] Successfully started Logstash API endpoint {:port=>9600}
C:/Users/Admin/Desktop/Elastic_search/logstash-6.8.23/vendor/bundle/jruby/2.5.0/gems/rufus-scheduler-3.0.9/lib/rufus/scheduler/cronline.rb:77: warning: constant ::Fixnum is deprecated
[2022-04-04T16:10:09,577][DEBUG][logstash.instrument.periodicpoller.cgroup] One or more required cgroup files or directories not found: /proc/self/cgroup, /sys/fs/cgroup/cpuacct, /sys/fs/cgroup/cpu
[2022-04-04T16:10:09,948][DEBUG][logstash.instrument.periodicpoller.jvm] collector name {:name=>"ParNew"}
[2022-04-04T16:10:09,951][DEBUG][logstash.instrument.periodicpoller.jvm] collector name {:name=>"ConcurrentMarkSweep"}
[2022-04-04T16:10:11,717][DEBUG][logstash.pipeline ] Pushing flush onto pipeline {:pipeline_id=>"main", :thread=>"#<Thread:0xaf6cee2 sleep>"}
[2022-04-04T16:10:14,595][DEBUG][logstash.instrument.periodicpoller.cgroup] One or more required cgroup files or directories not found: /proc/self/cgroup, /sys/fs/cgroup/cpuacct, /sys/fs/cgroup/cpu
[2022-04-04T16:10:14,960][DEBUG][logstash.instrument.periodicpoller.jvm] collector name {:name=>"ParNew"}
[2022-04-04T16:10:14,961][DEBUG][logstash.instrument.periodicpoller.jvm] collector name {:name=>"ConcurrentMarkSweep"}
[2022-04-04T16:10:16,742][DEBUG][logstash.pipeline ] Pushing flush onto pipeline {:pipeline_id=>"main", :thread=>"#<Thread:0xaf6cee2 sleep>"}
[2022-04-04T16:10:19,604][DEBUG][logstash.instrument.periodicpoller.cgroup] One or more required cgroup files or directories not found: /proc/self/cgroup, /sys/fs/cgroup/cpuacct, /sys/fs/cgroup/cpu
The last part gets printed every 2 seconds or so, for me it seems like its waiting to start though I let this run several minutes and it kept printing the same lines. In Kibana I check if my index got created but that wasn't the case.
The logstash-plain.log gives the same output as the console.
Why is there no index created and filled with the postgresqldata?