Fix JsonGenerationException

✅ Solution

JsonGenerationException in Elasticsearch typically arises when the data being indexed contains values that the JSON serializer cannot handle, such as circular references or unsupported data types like NaN. To fix it, inspect your log data for problematic values, and either sanitize/remove these values before indexing (e.g., replacing NaN with null or filtering out circular references) or configure your Elasticsearch mapping to handle these data types appropriately where possible (which is often not possible with NaN values specifically).