* Generate eval result in separate method
* Adapt benchmarking utils
* Adapt running retriever benchmarks
* Adapt error message
* Adapt running reader benchmarks
* Adapt retriever reader benchmark script
* Raise error if file doesn't exist
* Raise error if path doesn't exist or is a directory
* Remove unused line
* Create separate method for getting reader config
* Make use of get_reader_config
* Create separate method for retriever config
