How to update logstash 8.9.1 to 8.12.2

Elastic Stack Logstash
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Here's the corrected text:

"Hi, this is Michael Mathan S. I'm trying to upgrade Logstash from version 8.9.1 to 8.12.2, but I'm encountering several errors. Could you please advise me on how to fix the following errors?

Error 1:

[2024-03-20T11:56:35,871][ERROR][logstash.outputs.elasticsearch][main] Failed to install template: Got response code '400' contacting Elasticsearch at URL The error message indicates: 'x_content_parse_exception', with the reason being '[1:44] [index_template] unknown field [settings]'.

Error 2:

[2024-03-21T15:10:04,942][ERROR][logstash.javapipeline][main] Pipeline error: NoMethodError: undefined method `serverless?' for

Attached are my logstash.config and LIMSIndices.json files for your reference.

[LIMSIndices.json contents]

LIMSIndices
LIMSIndices2481×3509 286 KB

Could you please review these and provide guidance? Thanks!"

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