PGRag example does not work?

neondb=> SELECT rag_bge_small_en_v15.embedding_for_passage('This is just a test');                                                                                                                                                          ERROR:  [rag_bge_small_en_v15] Couldn't connect worker stream /tmp/.s.pgrag.rag_bge_small_en_v15.31673: No such file or directory (os error 2)
CONTEXT:  SQL function "embedding_for_passage" statement 1

SET neon.allow_unstable_extensions='true';
create extension if not exists rag cascade;
create extension if not exists rag_bge_small_en_v15 cascade;
create extension if not exists rag_jina_reranker_v1_tiny_en cascade;