Logstash YAML Parsing Error: Tab Character Indentation Issue

The error message indicates that there is an issue with the formatting of the YAML file '/usr/local/logstash/config/logstash.yml'. Specifically, it seems that there is a tab character used for indentation, which is not allowed. The error message suggests checking for incorrect whitespace and indentation in the YAML structure.

The error has caused Logstash to stop processing, resulting in a SystemExit exception. The exception is caught by the Ruby runtime and ultimately leads to the termination of the Logstash process.

To fix the issue, the YAML file should be edited to remove any tab characters and ensure that the indentation is done using spaces. Once the YAML file is properly formatted, Logstash should be able to start processing again.