# Ruby exception
**URL:** https://discuss.elastic.co/t/ruby-exception/176557
**Category:** Logstash
**Created:** [April 12, 2019, 7:29am UTC](https://discuss.elastic.co/t/ruby-exception/176557 "2019-04-12T07:29:03Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Abhilash\_B](https://discuss.elastic.co/u/Abhilash_B)
#### Post date: [April 12, 2019, 7:29am UTC](https://discuss.elastic.co/t/ruby-exception/176557/1 "2019-04-12T07:29:03Z")
Is there any issue with the below logstash configuration. I am trying to access the file path using event.get('path') and then split it. I get the following exception
[2019-04-12T07:19:25,192][ERROR][logstash.filters.ruby] Ruby exception occurred: undefined method `split' for nil:NilClass
```
input{
beats{
port => 5046
}
}
filter{
if [message] =~ /(.*): (.*) - (.*)/ {
mutate { strip => ["message"] }
ruby {
code => '
msg = event.get("message")
path = event.get("path")
path = path.split("/")
puts path
site_id = path[-2]
source_id = path[-3]
matches = msg.scan(/(.*): (.*) - (.*)/)
m = matches[0]
event.set("test", m[1])
event.set("value", m[2])
event.set("site_id", site_id)
event.set("source_id", source)
'
}
}
else{
drop {}
}
}
output {
elasticsearch {
hosts => ["localhost:9200"]
index => "verra-prod-dgn-logs"
}
stdout { codec => rubydebug }
}
```
Any help is appreciated.
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [April 12, 2019, 12:22pm UTC](https://discuss.elastic.co/t/ruby-exception/176557/2 "2019-04-12T12:22:05Z")
That would occur if the events do not have a [path] field.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 10, 2019, 12:36pm UTC](https://discuss.elastic.co/t/ruby-exception/176557/3 "2019-05-10T12:36:20Z")
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