Welcome to the discuss forum,
Thank you for raising this issue. It seems like the model name has changed in Hugging Face. Could you try the following command install the model?
docker run -it --rm --network host \
docker.elastic.co/eland/eland:8.9.0 eland_import_hub_model \
--url https://localhost:9200 -u elastic -p nonprodpwd \
--hub-model-id sentence-transformers/msmarco-MiniLM-L12-v3 \
--task-type text_embedding --insecure
The naming difference is the removal of a "-" in between the L and 12 in the name.