Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires ruflin/elastica ^8.0 -> satisfiable by ruflin/elastica[8.0.0]. - ruflin/elastica 8.0.0 requires elasticsearch/elasticsearch ^8.4.1 -> found elasticsearch/elasticsearch[v8.4.1, ..., v8.15.0] but it conflicts with your root composer.json require (^7).

Process completed with exit code 2.