ConnectionRefusedError When try to do embedding in RAG

[mengyulu0521]

2024/gemma2_local_rag/indexer.py
when it comes to Chroma.from_documents, I get the following error:

File "/rag/indexer.py", line 47, in
vectorstore = Chroma.from_documents(
File "/opt/conda/lib/python3.10/site-packages/langchain_community/vectorstores/chroma.py", line 790, in from_documents
return cls.from_texts(
File "/opt/conda/lib/python3.10/site-packages/langchain_community/vectorstores/chroma.py", line 754, in from_texts
chroma_collection.add_texts(texts=texts, metadatas=metadatas, ids=ids)
File "/opt/conda/lib/python3.10/site-packages/langchain_community/vectorstores/chroma.py", line 276, in add_texts
embeddings = self._embedding_function.embed_documents(texts)
File "/opt/conda/lib/python3.10/site-packages/langchain_community/embeddings/ollama.py", line 211, in embed_documents
embeddings = self._embed(instruction_pairs)
File "/opt/conda/lib/python3.10/site-packages/langchain_community/embeddings/ollama.py", line 199, in _embed
return [self.process_emb_response(prompt) for prompt in iter]
File "/opt/conda/lib/python3.10/site-packages/langchain_community/embeddings/ollama.py", line 199, in
return [self.process_emb_response(prompt) for prompt in iter]
File "/opt/conda/lib/python3.10/site-packages/langchain_community/embeddings/ollama.py", line 170, in _process_emb_response
raise ValueError(f"Error raised by inference endpoint: {e}")
ValueError: Error raised by inference endpoint: HTTPConnectionPool(host='localhost', port=11434): Max retries exceeded with url: /api/embeddings (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f97338b0d30>: Failed to establish a new connection: [Errno 111] Connection refused'))