since this morning, I don't have summaries anymore because of the useSemanticChunks property when calling the https://discoveryengine.googleapis.com/v1/projects/locations/global/dataStores//servingConfigs/default_config:search endpoint. And I don't have any summary for the other endpoint, with or without the useSemanticChunks property : "https://discoveryengine.googleapis.com/v1/projects/PROJECT_ID/locations/global/collections/default_collection/engines/APP_ID/servingConfigs/default_search:search"

Can you help me to make it work back with useSemanticChunks ? Thank you in advance