I am trying to configure learning-to-rank (ltr) same demo on my machine as this one. I have installed ElasticSearch 5.4, python 3.6 (it include pip), request libraries and learning-to-rank plugin 0.1.1. "tmdb" index created and documents also exist in it and elasticsearch queries are working on it. But when I execute python train.py command, it generates following error.
Note: I am working on windows server.
Note: It's mentioned in error that elasticsearch can't recognize sltr but ltr plugin is installed.