Getting "ERROR: Unknown plugin" while installing specific plugin version built for Elasticsearch version 7.17.12

[aman199002]

There is no tag version available for Elasticsearch version 7.17.12. I created the one by performing following steps:

1. Checkout to a new branch es7.17.12 from tag 7.17.10
2. Set elasticsearchVersion = 7.17.12 in gradle.properties file
3. Run command ./gradlew clean check. Build was created inside build/distributions
4. Go to elasticsearch directory and run ./bin/elasticsearch-plugin install path_to_elasticsearch_ltr/build/distributions/ltr-1.5.8-es7.17.12.zip`

I am getting below error:
ERROR: Unknown plugin file:///elasticsearch-learning-to-rank/build/distributions/ltr-1.5.8-es7.17.12.zip

Is there something which i am missing for creating a new version compatible to my Elasticsearch?