Default Nginx access log pipeline does not process all user-agents from Logs


I have configured a Nginx access log with filebeat using default pipeline. I am using elasticsearch version 7.14.1
This pipeline however does not parse all the user-agents which come from nginx logs.

PFB few examples which have not been identified properly as OS and Browser breakdown

  1. Mozilla/5.0 (compatible; Google-Apps-Script; beanserver; +; id: UAEmdDd9bVrHiZADDW67wYQDz9ckO35bDYQ)

  2. Mozilla/5.0 (Linux x64) node.js/12.18.3 v8/

Please help me solve this issue

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